Tradesman ViseLarge anvil surface. 60,000 PSI tensile ductile iron body parts. 360° swivel base with double lockdowns. Wider jaws provide greater clamping surface. Fully enclosed spindle increases the life of the vise. Base Type: Swivel; Jaw Material: Steel; Jaw Opening: 5 in; Jaw Width: 5 1/2 in; Locking Type: Threaded; Material: Ductile Iron; Pipe Jaw Capacity: 1/4 in [Min], 3 in [Max]; Throat Depth: 3 3/4 in; Weight: 53 lb.