Bessey GS30K Steel Screw Clamp 12 in, 5-1/2 in Throat, Sliding Arm Bar Clamp, Standard Swivel PadDimensions Throat Depth (In.): 5 1 2 in Handle Length (In.): 3 15 16 in Bar Size (In.): 5 16 in Screw Size (In.): 0. 7 Bar Width (In.): 15 32 in Nominal Rail Size (In.): 63 64 x 15 32 Spindle Dia. (In.): 0. 70 Throat Depth1: 5 1 2 in Jaw Pad Width: 1 1 2 in Spindle Diameter1: 3 4 in Handle Length: 3 15 16 in Max Throat Depth: Greater than 5" Bar Width: 1 2 in Details Handle Material: Tempered Drop Forged Steel Application: Industrial Nominal Clamping