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: 28th December, 2018

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 Six 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. 

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.

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.

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