Performance Tool 37° Steel Flaring Tool W80671 — 3/16"–1/2" Tubing, Floating Cone Alignment

The Performance Tool W80671 37 Degree Steel Flaring Tool creates consistent 37° flares for AN and JIC fittings across five common tubing sizes.

The W80671 is a compact, heavy-duty flaring set engineered to deliver repeatable results for automotive, marine, and hydraulic line work. Built from steel with a floating cone alignment system, this tool lets you form accurate, leak-resistant flares on tubing ranging from 3/16" to 1/2" O.D. Whether upgrading brake lines, building custom fuel lines, or working on performance oil systems, the W80671 gives you the fit and finish professionals expect.

How does this tool ensure accurate 37° flares?

The W80671 uses a precisely machined flaring cone combined with a floating alignment system to seat tubing squarely before forming the flare. The yoke applies even pressure through a center screw for controlled shaping, minimizing distortion and undercutting.

• Floating cone centers the tube for accurate flare geometry
• Heavy-duty yoke and center screw deliver uniform compression
• Machined flaring surfaces reduce tool chatter and metal fatigue

Which tubing sizes and fittings work with this set?

This set accommodates five industry-standard outer diameters so you can handle common AN and JIC lines without swapping tools. It forms the proper 37° angle required for AN and JIC flare-seat fittings used in high-performance fluid systems.

• Compatible tube O.D.: 3/16", 1/4", 5/16", 3/8", 1/2"
• Creates 37° flares for AN and JIC fittings—no adapters needed
• Suitable for soft copper, brass, and some soft steel tubing

What construction and durability features does it offer?

Manufactured from hardened steel components, the W80671 is built to withstand workshop use and the torque required for consistent flaring. The compact design stores easily in a toolbox yet performs to professional expectations on repeated jobs.

• Steel flaring bar and yoke resist bending and wear
• Centered screw mechanism for repeatable operation under load
• Robust finish reduces corrosion and maintains alignment accuracy

How easy is it to use for a DIYer or a pro?

Operation is straightforward: clamp the tube in the appropriate die slot, align the floating cone, and tighten the yoke’s center screw to form the flare. Minimal setup and clear size markings make it accessible for novices while giving pros the speed and precision required for performance work.

• Simple clamp-and-turn setup—no special fixtures required
• Marked die sizes speed material setup and reduce errors
• Compact footprint fits bench or mobile toolkits for field repairs

Who this is for: The Performance Tool W80671 37 Degree Flaring Tool is aimed at automotive technicians, motorsport fabricators, and experienced DIYers who need reliable 37° AN/JIC flares. It’s a practical choice for anyone building or repairing brake, fuel, oil, and hydraulic lines where proper flare geometry and leak-free seals are essential. If you work frequently with 3/16"–1/2" tubing and require a durable, easy-to-use steel flaring set, the W80671 gives the consistent performance expected in high-performance applications.