Multi-Purpose Mechanic's ViseJaw opening expands to incredible 9 3/4" when reversed. Swivel base with four mounting lugs allows for 360º swivel. Two working anvil surfaces. Two lockdown bolts are furnished. Replaceable, hardened tool steel jaw faces. Base Type: Swivel; Jaw Material: Steel; Jaw Opening: 6 in; Jaw Width: 5 1/2 in; Locking Type: Threaded; Material: Grey Iron; Pipe Jaw Capacity: 1/8 in [Min], 3 in [Max]; Throat Depth: 3 3/4 in; Weight: 50 lb.