C-Clamp, Regular Duty, Extra Deep Throat, Size 6 In, Throat Depth 4 1/8 In, Min Proof Test 6600 Lb, Load Capacity 6600 Lb, Clamp Type Drop Forged, Spindles Hardened Steel, Black Oxide Coated, Pad Smooth, Gray, Anvil Smooth, Powder Coat, Ductile Iron Frames, Swivel Pad