This DOYLE™ Premium Flaring Tool Kit has an integrated clutch mechanism for precise 45° flares with smooth, uniform walls and no galling. It includes spare reamer and cutter blades plus adapters for 7 different tubing sizes up to 3/4 in. It is ideal for most copper or aluminum tubing. The eccentric flaring cone produces precisely tapered flares for tighter seals and reduced chance of leakage.