Cast iron body with hardened steel jaws. 100mm jaw opening. Knurled vice grips for secure clamping. Fits onto a drill press table with extra-long mounting slots. Chrome-plated handle and lead screw. Cast iron body with hardened steel jaws. 100mm jaw opening. Knurled vice grips for secure clamping. Fits onto a drill press table with extra-long mounting slots. Chrome-plated handle and lead screw.