Features: Multi-size lever-style benders have multiple slots in their forming head to bend different tubing sizes. They push their lever handle toward their fixed handle to apply steady leverage for making bends. Application / Bending Copper or Thin Walled Tube from 1/4 to 3/8 inch Tubing Outside Diameter - Maximum / 1/4 inch Tubing Outside Diameter - Maximum / 5/16 inch Tubing Outside Diameter - Maximum / 3/8 inch Compatible Tubing Material / Aluminum; Copper Bend Angle - Minimum / 90 ° Bend Angle - Maximum / 180 ° Bend Mechanism Style / Lever Bend Type Markings / Left; Offset; Right Handle Type / Ergonomic Compatible Tubing Shape / Round