Mechanic's ViseLarge anvil work surface. Heavy duty 30,000 PSI castings for long life and added strength. Swivel bar rotates 360º and has double lockdowns ensuring maximum stability. Powder coat paint resists scratches and provides a tough durable finish. Replaceable hardened steel top and pipe jaws. Base Type: Swivel; Finish: Powder Coated Paint; Jaw Material: Steel; Jaw Opening: 4 1/2 in; Jaw Width: 4 in; Locking Type: Threaded; Material: Cast Iron; Pipe Jaw Capacity: 1/4 in [Min], 2 in [Max]; Throat Depth: 3 7/16 in; Weight: 37 lb.