Features Standard service, deep throat style is the most versatile and popular. Hot forged for strength and hard use. Forcing screw has heavy rolled Acme thread allowing the screw to turn easily under pressure and is less susceptible to damage. Forcing screw has a sliding T-handle and an impact resistant pad. Max. Opening / 4 in Throat Depth / 2 3/4 in Clamping Pressure / 6500 lb Body Material / Forged Steel Duty Rating / Regular Duty Throat Shape / Standard Anvil Shape / Flat Body Color / Black Min. Opening / 0 in Body Finish / Black Oxide Swivel Pad / Yes Spindle Material / Steel Spindle Finish / Black Oxide Standards / CID A-A-429C