The surface is made of engineering plastic to avoid damaging the surface of the tubing, and high-strength steel is added inside to provide very high strength Suitable for bending 3/16”,1/4”, 5/16”, 3/8” O.D tubing, can be used for copper, brass, aluminum and thin steel pipes. You can bend the tube to 0-180° Ergonomic handle allow you to provide the best and comfortable working experience. The handles on this manual tube bender provide a comfortable and sturdy grip for extended use, making it much easier to get the job done The pipe bender is easy to operate and portable. Made with high precision and premium machining quality, it is a robust tool that is built to last Versatile pipe bender for all fields you can imagine: pluming jobs, heating and sanitary installations, automotive repair, home improvement, however, they can also be used for DIY projects