Professional Brake Flaring Tool Kit, for Single, Double and Bubble Flares in Hard and Soft Metals. This brake flaring tool will pay for itself with the first project, and it’ll give you peace of mind knowing that your brake flares are of OE-precision quality and safety. Mounts in your vise to help you easily form 45-degree double, single and bubble flares in OE steel, stainless steel, and soft metal tubing. Use with 3/16″, 1/4″, 5/16″ and 3/8″ diameter lines… Which means it will handle all your plumbing jobs from brake lines to transmission cooler lines and fuel lines. Turret-style design allows you to make those precision flares in minimal time. All the brake-flaring forming dies you need are mounted right on the turret, so there’s no fumbling for small parts, no worry about missing dies. T-handle screw clamp securely holds your line in place during forming.