This is a 7/8" OD Round Tubing die. It bends approximately 90 degrees per pull and by making multiple pulls will enable you to make bends up to 270 degrees with a bending radius of about 4". All of our round tubing dies are made of hot rolled American steel with inserts made from Delrin, which will not scratch stainless. All our dies are guaranteed for life. This die is also compatible with other benders that have center pins from 1/2" to 1" in diameter.