Cantilever Clamp, Jaw Pad Type Flat, Jaw Opening - Maximum 4 1/2 in, Throat Depth - Closed 2 1/2 in, Throat Depth - Open 2 1/4 in, Clamping Force 1,700 lb, Body Finish Zinc-Plated, Body Material Steel, Spindle Material Plastic Pad on Steel Jaw, Handle Design Coated T, Jaw Pad Material Copper-Plated Steel