A tubing bender is used, well, to bend tubing for your car. When you want to copy the bend of an existing pipe or need to make accurate, repeatable bends, this tool is invaluable. The degree indicator makes it real easy to copy a pipe off your car. An adjustable V-block is placed on the pipe. You set the degree you want the bend to be, then bend the pipe until it sits down on both ends. Simple.