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