Sliding Arm Bar Clamp, F-Style, Opening (In.) 12 in, Throat Depth (In.) 7 in, Nominal Rail Size (In.) 1-37/64 x 25/32, Nominal Clamping Pressure 4,880, Spindle Dia. (In.) 55/64, Pad Type Swivel, Swivel Type Standard, Swivel Pad (In.) 1-1/2, Screw Size (In.) 45/64, Max. Jaw Opening (In.) 12 in, Clamp Face (In.) 3/4, Bar Thickness (In.) 25/32 in, Bar Width (In.) 1 37/64 in, Bar Material Steel, Handle Length (In.) 4 5/8 in, Handle Material Steel, Bar Size (In.) 1 37/64 in