Brake Line Flaring Tool Kit, 37/45, 3/16–3/8 in

Brake line flaring tool kit delivers consistent 37° and 45° flares for tight, leak-resistant connections on brake, fuel, and transmission cooler lines. Dual rotating die heads help you form double flares and bubble flares with repeatable accuracy. Built for copper, aluminum, and thin steel tubing, this set includes the cutting and deburring tools needed to prep lines fast and keep repairs moving.

• Delivers 37° and 45° flares using dual rotating die heads for double and bubble flare jobs


• Fits 3/16", 1/4", 5/16", 3/8" tubing for common automotive brake and fluid line repairs


• Includes tube cutter and deburring tool to prep clean tube ends for better sealing


• Improves alignment with clearly labeled die head and T-handle clamping to reduce slippage


• Stores neatly in a portable case to keep dies organized and ready for mobile work

Designed for quick, repeatable results, this flaring kit combines hardened carbon steel construction with precision threads to hold the tube securely during high-force forming. Use it to build or repair lines with confidence, whether you’re in a professional bay or tackling a driveway job. Keep the right die size on hand, cut and deburr your tube, and form a clean flare that seats properly. Grab yours today and be ready for your next line replacement.

• Flare angles: 45° and 37° (double flare and bubble flare capability)


• Compatible tubing sizes: 3/16", 1/4", 5/16", 3/8" (4.76, 6.35, 7.94, 9.52 mm)


• Compatible materials: copper, aluminum, thin steel pipes


• Applicable wall thickness: 0.5–1.2 mm (0.02–0.04 in)


• Main material: carbon steel


• Dimensions: 330 × 195 × 100 mm (13 × 7.67 × 3.93 in)


• Net weight: 4.6 kg (10.14 lb)


• In the box: flaring tool, 45° die head, 37° die head, 4 die sets, tube cutter, deburring tool, T-handle, thread wrench, storage case