Ratcheting Tubing Bender Set Bend Mechanism Style Ratchet-Driven Bend Type Markings Calibrated Angle Markings from 0 to 90 Degrees Tubing Outside Diameter 1/4 in 5/16 in 3/8 in 1/2 in 5/8 in 3/4 in Compatible Tubing Material Aluminum Soft Copper Bend Angle - Minimum 0 Degrees Bend Angle - Maximum 90 Degrees Centerline Bend Radius 1/2 in 1/4 in 3/4 in 3/8 in 5/16 in 5/8 in 7/8 in Application Soft Copper and Aluminum Tube