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