Brake Line Flaring Tool Kit, 45 Double Bubble, 3/16–3/8

Brake line flaring tool kit helps you form clean 45° double flares and bubble flares for tight, leak-resistant brake, fuel, and transmission cooler line connections. The rotating die head and precision dies deliver consistent results on common tubing sizes, while the hardened carbon steel body stays stable under high-force use. Clear size labels and a secure T-handle clamp streamline setup, and the included tube cutter plus portable case keep repairs organized at the bench or on the go.

• Delivers 45° double flares and bubble flares for secure sealing on automotive lines


• Fits 3/16", 1/4", 5/16", 3/8" tubing (4.76–9.52 mm) with 4 matched die sets


• Handles copper, aluminum, and thin steel tube walls from 0.5–1.2 mm (0.02–0.04 in)


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


• Includes tube cutter, wrench, handle, and carry case for clean cuts and organized storage

Whether you’re replacing a corroded brake line or fabricating a custom run, this flaring tool kit is built for repeatable, workshop-level flares without the trial-and-error that causes leaks and rework. The rotating die head speeds up switching between flare types, and the carbon steel construction holds up to frequent use in DIY garages and professional shops. Keep it in the included toolbox for quick access when a line repair can’t wait—grab yours today and get your next connection sealed with confidence.

• Flare types: 45° double flare, bubble flare


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


• Compatible materials: copper, aluminum, thin steel tubing


• Wall thickness range: 0.5–1.2 mm (0.02–0.04 in)


• Main material: carbon steel


• Product dimensions: 13 x 7.67 x 3.93 in (330 x 195 x 100 mm)


• Net weight: 9.83 lb (4.46 kg)


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