Best Flaring Tools in 2027

This kit leads our ranking. It covers single and double flaring on tube from 0.1875 in to 0.5 in, which matches the 3/16 in to 1/2 in tubing named in the listing for brake, fuel and transmission lines. It also lists brass, copper, aluminum, magnesium and mild steel as compatible tubing.

The kit is built around convenience. It includes a tube cutter, a tube bender and tubing fittings, so you can cut, bend, flare and connect from one box. That saves separate purchases. The listing names a flaring bar, a flaring cone and five adapters, plus inverted tube nuts and unions for 3/16 in line.

The maker doesn't publish the flare angle or drive type. Confirm the angle matches your vehicle before you buy, because a wrong angle can leak at the fitting. The listing also gives no weight or warranty, so judge it as a repair kit first and a precision tool second.

This kit ranks second. It handles single and double flares on tube from 0.1875 in to 0.5 in, and the listing says metric tube sizes are supported. That helps if your vehicle uses metric lines. Like the top-ranked kit, it does not publish a flare angle or drive type.

The package is large. The listing describes copper-plated brake lines, 102 fittings, a 3-in-1 tube bender and a pipe cutter that handles tube from 1/8 in to 7/8 in outside diameter. The bender is listed for copper, aluminum and stainless steel. Cutting clean, burr-free ends matters because a rough cut makes a poor flare.

Note that the listing separates the tools. A single flare tool covers 3/16 in to 1/2 in, while the double flare tool is described as handling standard brake line connections. It does not say which sizes or angle the double flare tool covers. Confirm that before ordering for a brake job.

This tool ranks third and lists both 45° and 37° flare angles, so one body covers vehicles that need either. That lets you match the angle your vehicle's flare seats require. It makes single, double and bubble flares. It includes nine dies, the highest count on the page.

Tube range runs from 0.1875 in to 0.375 in, with metric support. That covers 3/16 in through 3/8 in line, but not 1/2 in. Check your line size first. The listing also names 4.75mm and 6mm lines. It names 304 stainless steel, steel and soft metal tubing. Some rival listings say they are not suitable for stainless steel.

It is a manual tool that mounts in a vise, so it works on the bench only. You cannot use it under the car. It does not include a cutter, bender or fittings, so plan to buy those separately. The die head turns through three steps for a double flare.

This hydraulic kit ranks fourth. The hydraulic drive does the pressing, so you do less physical work than with a manual handle. It is listed for 45° only, so it fits vehicles that use that angle but not those that need 37°. It lists single, double, inverted, push connect and ISO flares.

Tube size runs from 0.1875 in to 0.5 in, with metric support. The included cutter handles pipe from 1/8 in to 5/8 in and a deburring tool cleans the cut edge. Clean edges help the flare seat well. The listing says it is not suitable for stainless steel pipes and names copper and fuel, brake and transmission lines.

Dies are the main draw. The listing names 45° inverted dies for 3/16 in to 1/2 in, ISO dies for 4.75-10 mm, push connect dies and dies for fuel and transmission cooling lines. A steel yoke and a carry case come with it. The maker doesn't publish weight, and the listing does not mention a bender or fittings.

This tool ranks fifth. It lists 45° and 37° flare angles and makes single, double and bubble flares, much like the third-ranked kit. It includes eight dies for 3/16 in, 1/4 in, 5/16 in and 3/8 in lines, with metric sizes listed too. Four die sizes per angle keep the setup simple.

Setup matters here. The base must be clamped in a vise, and the listing says it is not suitable for use under a car. The split dies have a limiting hole to keep them from slipping. The handle turns to the left, which the maker says suits right-handed users and takes less effort.

It lists stainless steel, steel and soft metal such as copper. It does not include a cutter, bender or fittings. The listing advises goggles and gloves, since debris can pop up when you turn the handle. The tube range tops out at 0.375 in, so 1/2 in line is outside its range. Weight and warranty are not published.