ITEM NAME:Bending Machine Air Conditioner 180 Degree 3 In 1 Elbow Tool Tube Bender Manual Features: 3-in-1: It is suitable for three sizes of tubing 1/4", 5/16" and 3/8". Versatile Tools:Bending 0-180 degree copper , aluminum ,brass,and thin stainless steel pipes in the air.1pc x Tube Bender. Versatile Tools:Bending 0-180 degree copper, aluminum ,brass,and thin stainless steel pipes in the air conditioner installation and vehicle repair. 3-in-1: It is suitable for three sizes of tubing 1/4", 5/16" and 3/8".