Uniweld 70015 3-in-1 Triple Tube Bender for 1/4-Inch, 5/16-Inch and 3/8-Inch OD Soft Copper, Aluminum and Soft Stainless Steel Tubing Compact and durable tool with multiple bending channels Capable of bending 1/4in, 5/16in and 3/8in O.D. soft copper, aluminum and soft stainless steel tubing Calibrated markings show the angle of bend for accurate left hand, right hand and offset bends up to 180 Degree 1in bend radius