Tube Bender, Bend Mechanism Style Lever, Bend Type Markings Angle Markings From 0 to 180 Degrees , Tubing Outside Diameter 5/16 in, Compatible Tubing Material Aluminum, Copper, Thin Wall Steel, Bend Angle - Minimum 0 Degrees , Bend Angle - Maximum 180 Degrees , Centerline Bend Radius 11/16 in, Application Tube Bending, Features Better Control and without the Crossing of Handles, Easy Fabrication of Bends upto 180 Degrees with Reduced Effort, Typical of Most Other Lever Type Benders WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -