Cutter Adjustment Type Screw Cutting Action Center Features Cut Materials Up to Brinell 455 or Rockwell C48 Hardness Lockplate Keeps Jaws From Loosening Toggle Joints Turn 50 lbs of Hand Pressure Into 4000 lbs of Cutting Pressure For Maximum Diameter Hard Steel 5/16 in For Maximum Diameter Medium Steel 7/16 in For Maximum Diameter Soft Steel 7/16 in Grip Material Rubber