A knockout, hardy construction the TEKTON 6519 Tubing Bender to smoothly bend metal without any crimping. Strength and durability is with a sturdy cast alloy construction and scorched enamel finish. the non-slip, knurled grip handles and effortlessly bend copper, brass, aluminum, and thin-wall steel to angles up to 180 degrees. The three-channel design 1/4, 5/16, and 3/8 in. O.D., making this tool idealistic for respective water, gas, refrigeration, and brake line applications. And since it 's TEKTON, this tubing bender is always. So ahead, Take It On.Specifications : Pipe Capacity : 1/4, 5/16, and 3/8 in. .