Wilton 1275N, 6-Inch Jaw Width 7-1/2-Inch Jaw Opening Verti-Lock Vise The ductile alloy vise body with flame-hardened bed provides solid work support, accuracy, and longevity The fixed jaw is rated at 85,000 PSI and the annealed, surface ground sliding jaw at 70,000 PSI Totally enclosed vise screw is cut from special alloy steel, hardened and ground The vise and optional swivel base have coolant troughs to channel fluid out of your way