6 in Bar Clamp Steel Handle and 4 3/4 in Throat Depth.  Sliding Arm Bar Clamp, F-Style, Opening (In.) 6 in, Throat Depth (In.) 4 3/4 in, Nominal Rail Size (In.) 55/64 X 13/32, Nominal Clamping Pressure 1,330, Spindle Dia. (In.) 5/8, Pad Type Smooth, Swivel Type Standard, Swivel Pad (In.) 1-1/2, Screw Size (In.) 13/32, Max. Jaw Opening (In.) 6 in, Clamp Face (In.) 3/4, Bar Thickness (In.) 13/32 in, Bar Width (In.) 55/64 in, Bar Material Steel, Handle Length (In.) 4 5/8 in, Handle Material Steel, Bar Size (In.) 55/64 in, Clamping Surface D (In.) 3/4 in