The Benefits of Using a Line Wrench

When working with brake and hydraulic lines, you want to ensure the job is done correctly.

When working with brake and hydraulic lines, you want to ensure the job is done correctly. That means getting the proper tools for the job that will allow you to work quickly and efficiently.

Whether You’re a Professional Mechanic or a Do-It-Yourselfer, We Want to Help You Find the Line Wrench for Your Needs.

If you're looking for the best options for Line wrenches, read this article for the best tips! We'll help you find the right product for your needs and ensure you know exactly what to look for before you buy.

You deserve the best tools for the job, and with our help, you can find them. So what are you waiting for? Read on to learn more about Line Wrench! Click this link!

How Mechanicaddicts Chooses the Line Wrench

When it comes to a Line wrench, how do you know which product is the best for your needs?

There are so many products on the market that it can be overwhelming to figure out which is right for you. You might not want to spend unnecessary time researching or wasting your time or money on the wrong product if you don't know if they work for you.

That's where our expert reviewers come in. They have spent time reviewing the best products for your needs, and this article is designed to help you make the best decision possible. We'll walk you through the types of Line wrenches available and what each is good for so that you can find the perfect fit for your needs.

DURATECH Flare Nut Wrench Set

Best for Corrosion and Rust-Resistant Chrome Plating

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Why We Like It

The Chrome Vanadium Wrench is a top-quality tool that exceeds ANSI standards. It has been drop forged and finished with corrosion-resistant chrome plating. The stamped brand and “CHROME VANADIUM” letters on the wrench handle provide an extra gripping point, making it easier to use. This wrench is built for durability and extended tool life.

Things to Know

The DURATECH Flare Nut Wrench Set is designed to exceed ANSI standards. The wrenches are made with long-lasting performance in mind and have offset ends for tight spaces. The set comes with a roll-up pouch for easy organization and convenient storage. Each wrench size is printed on the pouch for easy identification. The tool pouch has two copper hanging holes for easy suspension.


  • Brand: DURATECH
  • Material: Chrome Vanadium Steel
  • Item Dimensions LxWxH: 1.97 x 1.97 x 1.97 inches
  • Finish Type: ‎Polished
  • Head Style: Flare Nut, Open End

GEARWRENCH Flare Nut Wrench Set

Best for a Set with a 15° Offset

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Why We Like It

The Gearwrench Flare Nut Wrench Set is perfect for soft-material hex nuts. The hex-shaped heads provide more contact points on the fastener, preventing damage to the nut. This set includes six wrenches in different sizes so that you can find the perfect fit for your needs. With a durable chrome finish, these wrenches will last through years of use.

Things to Know

GearWrench offers a flare nut wrench set with 15° offset wrench heads to help make the job easier. The sizes are stamped on both sides of the wrench beam for quick identification, and the wrenches are manufactured from alloy steel for better strength and longer tool life.


  • Brand: GearWrench
  • Material: Blend
  • Item Dimensions LxWxH: 11.03 x 6.3 x 2.2 inches
  • Finish Type: ‎Polished
  • Head Style: Flare Nut

XJX Flare Nut Wrench Set

Best for Complete Set of Standard and Metric

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Why We Like It

The XJX flare nut wrench set is heat-treated chrome vanadium steel for superior strength and durability. The mirror chrome plated surface prevents rust and corrosion, while the classic hex-shaped open-head design provides a tight grip and more contact points for excellent anti-slip protection. The brake line wrench set is perfect for all hexagon accessories on automobiles and pipelines.

Things to Know

The XJX Flare Nut Wrench Set is a 15° offset design of the head at both ends that provides space for knuckles and is ergonomic. It is convenient for working in hard-to-reach areas or tight spaces. The line wrench is set metric, and SAE comes with a rolling pouch for easy organization, convenient storage, and easy carry. It has size markings on each flare wrench and pouch for easy identification, taking out, and storage.


  • Brand: XJX
  • Material: Chrome Vanadium Steel
  • Head Style: Hex
  • Finish Type: Chrome Plated

ARUCMIN Flare Nut Wrench Set

Best for organization and storage

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Why We Like It

The ARUCMIN flare nut wrench is designed to last - made of heat-treated chrome vanadium steel; it's solid and durable, so users can confidently rely on it. The wrench also features a mirror chrome plated surface that provides anti-rust and anti-corrosion capabilities to extend its service life further. These fine touches bring superior quality to every use.

Things to Know

Mirror chrome plated surface anti-rust and anti-corrosion fir extend service life.The ARUCMIN flare nut wrench set is made of heat-treated chrome vanadium steel, which is stronger and more durable than other materials. The mirror chrome plated surface prevents rust and corrosion, extending the service life of the wrench.


  • Brand: ARUCMIN
  • Material: Chrome Vanadium Steel
  • Head Style: Flare Nut, Box End
  • Finish Type: Chrome Plated

Sunex Tools Flare Nut Wrench

Best for Chamfered Edges

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Why We Like It

Sunex tools flare nut wrenches are a must-have for any job requiring flare nuts, such as air conditioning lines or brake lines.

The quality construction of these fully polished drop-forged alloy steel flare nut wrenches ensures that each fits correctly and won't slip off the flare nut due to its firm grip.

With both metric and SAE sizes included, the flare nut wrench is perfect for any mechanic's toolbox, and the handy canvas pouch allows quick and convenient transportation.

Sunex flare nut wrenches provide an outstanding combination of affordability, reliability, and strength unmatched by other flare nut wrenches on the market.

Things to Know

Use the Sunex 9809A Flare Nut Wrench Set to work confidently and efficiently on your automotive repair jobs. This comprehensive 9-piece set includes SAE and metric sizes from 1/4"x 5/16,7/16 to 11/16" and 9mm x 11mm up to 19mm x 21mm.

Made of drop-forged alloy steel and fully polished for durability, each wrench provides sure-grip performance for easy tightening and loosening fasteners. Plus, a conveniently designed roll case makes storing and transporting these essential tools a breeze. Don't work without it; get this set from Sunex today!


  • Brand: Sunex Tools
  • Material: Metal
  • Head Style: ‎Flare Nut
  • Finish Type: ‎Polished

HURRICANE SAE Flare Nut Wrench Set

Best for Easy Identification Markings

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Why We Like It

The Hurricane SAE Flare Nut Wrench Set is an incredibly durable and reliable tool made from the best-forged chrome vanadium steel.

Its surface is coated with a chrome finish for superior rust resistance, even after long-term use. Not only does it offer inner hex and remove fasteners, but with its combination wrench, it can also be used to quickly tighten and loosen nuts on aluminum, copper, brass, brake tubes, fuel lines, ATVs, and more.

Its 15° offset ends add extra torque for ease of operation, so your job will get completed faster than ever. With its traditional comprehensive profile, you won't have trouble gaining more leverage for heavier applications that demand quality tools. Pick up your set today and experience the power!

Things to Know

Whether it's 5/16, 7/16, or 5/8 inch bolts you're dealing with, this professional quality set of sizes is the perfect tool to have on hand. They exceed ASME specifications and are ideal for any mechanic or auto repair technician working on hydraulics lines from the brake master cylinder and proportioning valve.

With this set of two-sizes-in-one tools ready for use, it will be an easy task! There are even easy-reading marks for instant identification, so those bolts are out quickly. Don't worry about taking up too much space either - these comfortable sizes are easy to carry and great for keeping around your workstation.


  • Brand: HURRICANE
  • Material: Metal
  • Head Style: Flare Nut
  • Finish Type: Polished

Line Wrench FAQs:

You're busy and don't have time to read long, boring product descriptions. We understand you want to know the facts about line wrenches before purchasing. We've boiled it down to the most important questions and answers so you can make an informed decision

1. What Is a Flare Nut Wrench?

A line wrench is an open-end type designed for hydraulic lines and fittings. It features a thin, flat, slightly curved jaw that provides better access in tight spaces and works well with systems that require low torque. The handle has a wide range of lengths for better torque when using this tool for different applications.

2. What Are Flare Nut Wrenches Used For?

Flare nut wrenches, also known as line wrenches, are used for fastening and loosening pipes and tubes. They are designed to fit around the hexagon nut of a pipe or tube flared at its end.

This flare is created when the fitting is tightened down, resulting in a slightly thicker diameter at the flange than elsewhere on the tube.

Flare nut wrenches have an open-end design with two prongs at one end, which fit into either side of the flange’s hexagonal shape providing a secure grip and griping power to loosen or tighten most standard-sized flare nuts.

These wrenches are used in the automotive industry to loosen and fasten brake lines and some steering bolt connections.

3. What’s the Difference between a Line Wrench and a Regular Wrench?

A line and regular wrench are tools used to fasten or remove bolts, nuts, and other threaded components. The main difference between the two is their shape. A regular wrench has parallel sides, while a line wrench has an angled opening, allowing it to access more difficult-to-reach places such as recessed fittings, narrow spaces, and curved surfaces.

4. Do I Need a Flare Nut Wrench?

You need a flare nut wrench if you are undertaking any plumbing and automotive work project. Flare nut wrenches, also known as line wrenches, are specifically designed to hold the nut without damaging it or slipping off during use. They feature two points at either end of the tool that grips and turn a variety of fasteners, such as nuts or fittings.

5. Can You Use a Regular Wrench for Brake Lines?

No, it would be best if you did not use a regular wrench for brake lines. The reason is that brake lines are steel with a softer and more malleable structure than most other metals used in wrenches.

As a result, using an ordinary wrench can damage or deform the brake line due to its stricter grip. Instead, it is highly recommended to use a specific flare nut wrench explicitly designed for tightening/loosening brake lines, as they are built with extra care so that their grips do not cause any damage to the delicate metal that makes up your brake line.

This ensures that there are no gaps between the two pieces of metal where air can leak out and decrease the efficiency of your brakes, meaning you may end up with poor-responding brakes if this happens!

6. Can You Over-Tighten a Flare Fitting?

Yes, it is possible to over-tighten a flare fitting. When a flare fitting is tightened too much, it weakens the wall of the tubing or pipe and can lead to cracking in the material. This weakening can also cause the connection to fail to force leakage of any fluid passing through.

Final Thoughts about Line Wrench

A line wrench is a handy tool that can most definitely come in handy when needed. It's important to know what size and shape of line wrench you need so that you're prepared for any job. Check the price and flange shape design before purchasing to get the right one for your needs. Thanks for reading!

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