Tube Bender, Bend Mechanism Style Lever, Bend Type Markings Left, Offset, Right, Tubing Outside Diameter 3/16 in, 1/4 in, 5/16 in, 3/8 in, Compatible Tubing Material Aluminum, Brass, Copper, Bend Angle - Minimum 90 Degrees , Bend Angle - Maximum 180 Degrees , Centerline Bend Radius 3/16 in, 3/8 in, Application Tube Bending, Calibration Increments 15 Degrees