What is the Best Brake Line Flaring Tool Kit & Where to Find?

We evaluated the top flaring tool kit available in the market compared the process of tools cost, usages, features and  life cycle.

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Written by: Christopher Smith  |   Updated: 12th September, 2019

In this article, we will talk about the buying factors of brake line flaring tool kit, few top recommendations for the users along with some basic discussion. 

How We Found Top Product

Tools Adviser team collaborate with our guest author over here to create this guide for all of you. We research and check many products based on cost, features, using process and so on. Then came up with a list of top recommended product to help you out all. Before buying anything you can read our buying guide to know more and find the suitable one for you.





Ease of Use

What is the Brake Line Flaring Tool Kit?

Pipes are usually the backbone of any construction project. They serve as the foundation of a bigger structure and they need to hold things together. This foundation should be stable because when it crumbles, everything else will follow. It is crucial for pipes to fit together and to do this; you need tools to adjust the ends of different sections. One thing you can use is a flaring tool. This tool will adjust your pipes and make them more pliable, so they will fit the next section.

This adaptive mechanism will come in handy in important applications, both professional and hobbyist. Almost anyone can use the tool because they are easy to handle. You need not project enough prowess into the tool because on its own; it is already efficient. The tool can be used for automotive purposes as well such as in fitting brakes, fuel, cooling, and transmission lines. The best brake line flaring tool can make all the difference in your car. Even in non-automotive industries, you can use a flaring tool kit.

Factors to Consider Before You Purchase

Are you working as a mechanic or own a auto mobile repair store? Do you like to fix your own car? Need to repair your  car brake?

If you are already excited to buy your kit, you need to wait for a little longer because you need to know the features you should look out for before buying one. Here are some of them:

  • Application Flaring tools are known for their efficiency as cutting tools, so they should be able to perform this function well. As mentioned above, they are perfect for car applications since automotive projects usually deal with pipes. If you are planning to buy your flaring tool kit, make sure that the components are compatible with your car, specifically your brakes.
  • Leakproof The best brake line double flaring tool should be leak-proof because it will lose its essence if it leaks. The ability of a material to be leak-proof depends on the material by which it is made Choose that one which is made of thick and durable fittings to ensure that there will be no leakage of corrosive materials.
  • Cost – If you look at the market single flare tools are much cheaper than compared to the double flare kits. However, if you will use the tool for heavy-duty applications, it is much better to invest in something that will last for years. The quality of the project will surely justify the cost of double flare kits you will create.
  • Brake System–This is one of the most crucial parts where you will use your flaring tool kit. Make sure you know how your brake system works, its parts and the pipes and fittings you need so you will also know what kit to purchase. You should already have a foresight of the cuts you will make, and you can do this through a proper visual inspection of your brake system.
  • Flaring Tool Adapters- There are a lot of adapters that can come along with your kit if you know where to find them. These adapters would help in piecing together tricky sections of your piping. It is best you buy them with the toolkit rather than individually, so you would not have to check each one. Also, this minimizes purchasing the wrong adapters that are not compatible with the tool.
  • Durable Material– You should buy the tool that is durable enough to withstand years of applications. There are good materials out there that are being used for professional brake line flaring tool. You can find something that is durable yet still portable because manufacturers have learned to transform the material into something that is lighter. Metal steel materials are again making waves in the industry.
  • Efficiency– Double flaring tools will change the game of fitting pipes from the previous single tools you are using. The three main components of a flaring tool, namely the metal bar, the screw with its handle that goes into the pipe opening, and the metal piece that fits into the handle should be present for maximum efficiency. The ability of the tool to form tight fittings is one of the best measures of efficiency so make sure you look out for this one when you are purchasing your kit.

Editor's Pick for Top Ten Recommended Products

If you want to know the best flaring tools available in Amazon here are reviews worthy of your time:

OTC 6502 Master Brake Flaring Tool Kit

What We Like – 

  • Threads are finer.
  • The flares that are produced from the cutting tool look much cleaner.
  • Can easily cut squares using the tube cutters.
  • Perfect for DIY projects.

What We Don’t Like –

  • The debarring tool can gouge copper or nickel lines if used with too much pressure.
  • T-handle of the press bends easily making it difficult to apply force.
  • Pipe clamp can be very messy because it leaves marks on the pipe.

Replacing your brake lines will undoubtedly be more comfortable with the Master Brake Flaring Tool Kit. This kit covers different flares, including single, double, and bubble types. It is complete with all other tools that you will need for a perfect finish such as a flaring bar, arbor press, tube cutter, adapters, and deburring tool. It encloses all of these in a hard case you will surely find durable. The item only weighs 4 pounds, so it is portable. This is an excellent addition to your collection of tools, and it will easily match the aesthetics of your other kits. 

Shankly Flaring Tool Set

What We Like – 

  • The tubing cutter has nice features including its extra cutting wheel.
  • Comes in a handy plastic case.
  • Inclusive of everything you need.
  • Affordable price.

What We Don’t Like – 

  • Sticks with the traditional single flaring tool.
  • No instructions included so it can confuse whether it can double flares.
  • May not last that long.

If you do not want to shift yet to the new double flaring tool, then this kit is for you. It contains all the tools you need to do flaring jobs including a professional tubing cutter, standard swage fittings, flare adapters in varying sizes, a self-centering yoke, and a lot more. All these materials are made of steel, making them sturdy and reliable. With a chromed finish, these tools look just exactly how you want them to be. They operate with high accuracy and precision, making them perfect for different applications. All ten pieces of this kit can inevitably produce high-quality flares.

Neiko 20656A Auto Double Flaring Copper

What We Like – 

  • Availability of written instructions that come with the molded case.
  • Leak-proof tubing.
  • Easy to use parts.
  • Makes perfect flares including the bubble type.

What We Don’t Like – 

  • Some materials get destroyed with repeated heavy use.
  • Does not work with some slots such as the 3/16 line.
  • The case is flimsy.

If you need a kit that can use double or single flare with different materials such as copper, aluminum, brass, magnesium, and soft steel brake line tubing, this one is perfect for you. You can use the pieces of this kit for heavy-duty applications since it made from durable steel. It was designed to handle requests that may cause too much friction since it has an alloy steel and chrome plated finish. It organizes the tools in a hard-plastic storage case that is portable and convenient for transport. There are special offers you can check out, so you can avail discounts. 

ARES 70212 Double Flaring Tool

What We Like – 

  • Every piece function well.
  • Can make double flares with good quality quickly.
  • Affordable and reliable.
  • The mini tube cutter is an excellent addition to your collection.

What We Don’t Like –

  • May experience leaks and damages especially when working with 3/16 lines

This brand has proven itself to be worthy of recognition for producing flaring tools. With this kit, your tools will be more complete because it now has adapters that come in varying sizes. It also has a mini tubing cutter and a useful storage case where you can store all the pieces of the kit. You can use it in various applications because it can produce both single and double flares. It is very versatile and can work with different tubing. With ARES, it assures you the efficiency of the tools and the quality of the products they will produce. It can create the best brake line with this one.

OTC 4504 Stinger ISO Bubble Tool Kit

What We Like –

  • Leak free finished product.
  • Bits are more sturdy than other models.
  • Pipes are clamped firmly with the press.
  • You can trust that it is a professional brake line flaring tool.

What We Don’t Like –

  • The clamping process can damage the brake line.
  • Need to convert metric measurements to inch fractions.

This kit is an expert at producing crack-free bubble flares, making it unique from the other flaring toolkits that you will see in the market. This kind of flare is usually used in automotive brake systems because of its durability. Included in this kit are the flaring bars and all the adapters that you will need for your ISO bubble flare. Also, the forged yoke is made of heat-treated steel, making it resistant to damages. It might have a few pieces only, but they are well organized in a blow molded storage case. This kit is something that OTC can be proud of.

Flexzion Tools Set Tubing Pipe Brake Line Applications

What We Like –

  • It can use in daily applications including installation of home parts.
  • Can easily center the head unit because of the side alignment hole.
  • Flares fit perfectly on standard fittings.

What We Don’t Like –

  • Flares may come out uneven.
  • Might not work with hard copper.
  • Early release of the clutch when not pressed firmly.

If there is something that Flexzion can be proud of, it is the utterly smooth flares that its tools can produce. The fittings are sure to be firm with the bits that come along with the package. Unlike other models that specialize in automotive purposes, this kit is more ideal for water, gas, refrigeration, and brake line applications. It also includes a 1x Eccentric Cone Type flaring tool that is mounted in needle bearings. It recommends this one for copper and aluminum materials. If you need the perfect finish to your flares, make sure you grab this kit on your way home. 

ABN Auto Double Flaring Steel Brake Line

What We Like –

  • Fabricates: Copper, aluminum, brass, magnesium and soft steel made brake lines pipes can be flared using this tool.
  • Flaring options: you can do both single and double flaring with it.
  • Reduced friction: quality alloy steel and chrome plated swivel helps to reduce friction.
  • Durability: Heat treated steel yoke for durability and strength.
  • Transportation: Blow molded case ensures secure and better transportation.

What We Don’t Like –

  • Tube cutter: Does not include any tube cutter.
  • Difficulty: Thin press body makes it a bit difficult for double flaring.

Working on auto brake lines and brass tubing is a critical one, and the wrong and damaged tools are always going to make things worse. Auto Body New (ABN) has been providing premium automobile service for long and brought ABN Auto Double Flaring Copper Aluminum Soft Steel Brake Line and Brass Tubing Tool Kit for a better experience with brake lines and brass tubing. This kit is for both single and double flares and is a set of auto line tools you can trust. This ABN double flaring kit promises to make perfect flares with zero leaks.

Adjustable adapters and flaring tools are included in this kit ranging from 3/16” to 1/2″. You can easily use this kit on any kind of lines on your vehicle. The kit is basically designed for brake line replacement and tubing jobs. Its yoke is forged from heat treated steel that gives it better durability and strength. The very specialty of this kit is the lightweight case that makes sure you have a safe and better transportation of the tools.

Cal-Van Tools 165 Master Inline Flaring Kit

What We Like –

  • Flaring: The tool allows single, double and bubble flaring.
  • Perfect factory flares: The unique design of this tool locks the adapters’ cone and tube in a perfect line making perfect flares with less risk of breaking adapters.
  • Reduced chance of tube slipping: With the clamp and set screws putting pressure directly over the tube, you greatly reduce the chance of the tube slipping from the clamp. The double and single flare set included in this tool are also designed in a way to help this cause.
  • Low profile design: The slender low profile design of this tool allows the user to make flares on the vehicle and in tight spaces. 

What We Don’t Like –

  • Inconsistency: Works better when using larger flares.

The Cal-Van Tools, with 60 years of experience in manufacturing top-quality products for mechanics promises to serve the best for you — the Cal-Van Tools 165 Master Inline Flaring Kit – Double and Single Flares, Brake Flaring Tools. Professional Tool Kit is indeed a complete and professional flaring tool kit in this regard. This tool is Designed using state-of-the-art technology and with customers in mind. The kit includes a variety of flares for single, double and also bubble flaring and the tool design makes it much easier to serve the purpose. The tool kit increases the overall life of the clamp by not wearing down the teeth inside from repeated slipping. Flares can be achieved along frame rails or areas in the engine compartment saving the user time from having to remove components or complete lines to make repairs. This product is made of high-quality materials to serve you for years to come. It will meet your needs and deliver great quality at an affordable cost.

MASTERCOOL 72485-PRC Hydraulic Flaring Tool

What We Like –

  • Easy tube forming: comes with a great tube and die stabilizing arm for forming tube.
  • Adapter holder: quality magnetic adapter holder allows to keep the adapters in place.
  • Die set: its enlarged die set makes a better grip of dies.

What We Don’t Like –

  • Connecting limitations: does not work greatly for push connects.

This flaring tool comes with different features and adjustments for great quality in flaring. This kit is assembled with push connect in different sizes, GM line flare, brake lines, transmission flares, metric flares. A mini tube cutter is also attached with the kit. This incredible tool works on “Annealed Steel” and “Dead Soft.” Its mini tube cutter can be used for different sizes (1/8” to 5/8”). Anyone can use it because of its super simple and easy adjustment. It is a complete tool that will remove the nightmare of using of manual flaring tool again in your life. You can use it for professional results for both residential and industrial purpose.

As I already have said this product comes with different adjustments and tool that one can use for the various application. You won’t have to waste your money buying additional attachments for it. It has everything one needs for double or bubble flaring.

It is a quality tool designed with the best quality materials to make it durable. Its tube and die set stabilizing arms helps easy tube forming. You can enhance the grip quality with its enlarged die set. Its super magnetic adapter helps to keep the adapter in the right position. If you require different connections, flaring, custom lines, it is one of the best product you will get.

ATD Tools 5478 Master Flaring and Tubing Tool Set

What We Like –

  • All purpose usage: you can use it for cutting, bending and flaring tools.
  • Bubble flare: works efficiently for bubble flaring.
  • Bending capacity: bends perfectly and efficiently for light to medium purpose.
  • Tubing cutter: mini tubing cutter makes it the perfect tool for working in tight areas.

What We Don’t Like –

  • Usage: not for advanced and long term usage.

ATD tools are great for the beginners for easy and simple flaring. It gives an incredible tubing, flaring and bending for light to medium purpose. This flaring set contains:

  • Universal Flaring Tool Yoke
  • SAE Flaring Tool Bar Assembly
  • (5) SAE Flaring Tool Adapters in 3/16″, 1/4″, 5/16″, 3/8″, 1/2″ length.
  • Metric Flaring Tool Bar Assembly
  • Four ISO bubble flaring tool adapters in 4.75mm, 6mm, 8mm, and 10mm
  • Tubing Bender with two Adapter Wheels
  • Mini Tubing Cutter
  • Adapter Wrench

This tool is super easy and simple to use. You can work with it on steel brake, transmission, and fuel lines and copper, aluminum and brass tubing. You can also do bubble flaring for it. You can do both single and double flaring with it. Its roller-style tubing bender makes it easy for you to get tight bends. It reduces the possibility of collapsing the tube. It is also very efficient in tight areas if you use the mini cutter tube for 1/8” to 5/8” diameter tubes.

With this tool, you can easily make SAE 45˚ double & single flares in 3/16″, 1/4″, 5/16″, 3/8″ and 1/2″ tubes. It also fabricates ISO bubble flares in 4.75mm, 6mm, 8mm, and 10mm tubes.

Reading the instruction correctly will help you to get a better result from using this product.

As you can see, the essential components of all the kits are the same. You need to factor in the small differences before making your purchase.

Types of Brake Line Flaring

There are three basic types of flares used on automotive brake systems worldwide. These include the single flare, double flare, and bubble flare standard lines. You need to be familiarized with these standard lines because you will surely encounter them.

  • Single flare standard lines

This one is not used on automotive components and is never allowed on steel brake lines. The reason for this is that it cannot handle high-pressure brake systems such as those that are found in cars. As the name implies, it is only flared once in a conical shape. You need to be cautious in using this kind of flare because it is prone to cracks and leaks.

  • Double flare standard lines

The most common type is the double flare, also known as the inverted or 45-degree flare. It is usually manufactured using a single standard, but it can even tolerate certain variations. It looks like a tiny funnel that goes into the ID of the tubing. It is called a 45-degree angle flare since its back side is at that angle. This one is perfect for automotive systems because the double flare makes it stronger and more acceptable for high-pressure brake systems.

  • Bubble flare standard lines

You can easily recognize a bubble flare because the end of the tubing looks like a button. It differs from the double flare in that its back side is angled at 90 degrees. This is also common in vehicles although not in all regions of the world. Although there are certain similarities with double flare, bubble flare should not be interchanged with the former.

Frequenty Asked Questions

What is the most common brake line size?

It is crucial that you know the size of your brake line because the tools and other pieces you will use will depend on this one. There are different sizes you will see, but most cars only use one or two dimensions.

The two most common brake lines are 3/16 inch or 4.75 mm and 1/4″ inch. The former is the smaller size while the latter is the bigger one. One of the most common sizes of brake line used in brake systems is a 3/16-inch tubing. It uses an inverted flare nut that measures 3/8-24. It can also use 7/16-24 when you are using a ¼-inch brake tubing. 

We see both sizes of brake line in all cars and trucks worldwide. It usually finds the 1/4” brake line in important parts such as in the master cylinder and the ABS pump. Most old models of cars used the ¼,” but some have already switched to the smaller brake line. If you do not know the diameter of your brake line, do not worry because it is straightforward to get its measurement. You need a caliper which you can use to measure and then you are good to go.

If you do not have a caliper, you can still measure the parts through visual inspection of the fittings and, by trying whether the wrenches which you know the size of can to be used for the lines correctly. There are also some instructional videos you can watch.

What are brake lines made of?

It uses different materials in creating brake lines. Since these are essential parts of a hydraulic brake system, it is important that it uses the most durable and reasonable materials to ensure that leaks, cracks, and damages will be minimized. If you look in the market, you see that brake lines are made of steel or rubber. Which one is better?

Most cars would have rubber brake lines. These are durable and resilient and would surely last for years with no need replacement or repairs. Since it‘s not that hard, the brake line flexes under heavy pressure. It is easy to maintain this kind of brake line because they are not prone to damages. Some brake lines are also made of stainless steel, Teflon, and Kevlar. The significant difference between these materials and that of rubber is that they do not flex and expand even under extreme pressure. Because of this, they have better braking response. Usually, they also have a long life which is ideal especially if you are on a tight budget. They are also firm regarding its functionality at the pedal.

Most people choose stainless over the rubber, and this is right. Rubber brake lines are more appropriate for those who are now well-oriented to performing brake systems. However, if you know of the technicalities, you would know stainless steel is the right choice. Rubber brake lines would usually get squishy and spongy when dealing with extreme pressure, and because of this, you might lose control over the entire system. Stainless steel brake lines would give you more accuracy and precision.

However, despite all the advantages of a stainless line, there are also some disadvantages. For one, you would need to do regular maintenance as compared to when you are using the rubber. Since it deals with extreme pressure, you need to ensure that the lines do not become damaged easily. Dirt particles and other materials can cause the wear and tear of the inner part of the steel lines, and this could be catastrophic. 

Overall, we recommend that you still go for the stainless-steel lines because they are the perfect upgrade to your brake line system. You will surely look for that firmer pedal feel that may be provided to you by stainless lines.

How does bake line flaring work?

In order to get a leak free connection at the end of the brake line, brake line flaring tool is used. There are many ways to guard against the leak and get a leak proof connection in the tubing. But the use of brake line flare is wide because of its easy use and effectiveness.

Usually, the brake lines come with the flared at the end when you get it from any auto repair shop. But if you want to customize the length of the brake line, you will need to add flare according to your desired length.

Bake line flaring tools are available in both online store and physical stores where auto parts are sold. You can also get the flaring tool kit which contains every necessary thing you will require for brake line fittings. For different cars, different sizes of flaring are required. It is important to get the right size of the flaring tool for your car.

So, how does brake line flaring work?

At first, you will need to cut the line according to your desired length. Then you must place the brake line fitting on the right place over the tube. You can use a clamp to hold it properly. Then, you will need to insert the flaring tool at the end of the tube. There will be three prongs. Two prongs will be holding the brake line, and the other one will be used to flare the line.

The appropriate flare should be even and centered when you will open the brake fitting. It is important to ensure quality while fitting the brake line as quality fitting connects the brake line with the other parts properly.

For bake line flaring you will be required different types of tools. These tools are available in any shop. One of the most important tools for brake line flaring is the wrench. You will require two wrenches for replacing the brake line. However, flaring is the most crucial work for brake line fittings which should be done by the professionals.

Overall Verdict

Looking for the best brake line flaring toolkit does not have to be very tedious. Nowadays, choose the double flare kit because it is more convenient and helpful to do this since most automotive systems require its use already. You should also select the materials best suited for the application where you will use the flares. For brake lines in cars, go for the stainless-steel lines. Even though you would need to do more maintenance work, it would surely be worth your time.

The flaring tool kit is a must have especially when you are dealing with automotive projects all the time. Make sure you know how to use them and that you study carefully the product reviews above to know the best kid appropriate for your needs and preferences.

About Author

Christopher Smith

Christopher Smith

10-year writing vet and former Ford Racing staffer. A.A. in Journalism, B.A. in Creative Writing from Western Michigan University. Seeker of automotive tools and parts adventures gained through owning 30 cheap cars in 15 years.

Where to find the Best Brake Line Flaring Tool Kit?

Comprehensive buying guide with unbiased reviews of best brake line flaring tool kit available in the market. Learn and choose the one you need for project.

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