C-Clamp Jaw Pad Type Flat Includes Swivel Pad Yes Jaw Opening - Maximum 2 1/2 in Jaw Opening - Minimum 0 in Throat Depth 2 5/16 in Clamping Force 550 lb Body Material Cast Iron Body Color Gray Spindle Finish Zinc Plated Spindle Material Steel Handle Type Thumbscrew High Visibility No Number of Anvils 1 Number of Spindles 1 Release Mechanism Standard Thread Body Finish Powder Coated Throat Shape Square