1/2" Accu-Clamp Collar One-Piece Type, Steel, Hardened & GroundSpecifications 1L008ACG UPC Code: 662786027178 Total Width (in.): 0. 750 Series: Solution Weight (lb.): 0. 19 Material: Steel Finish: BLACK OXIDE Bore Size (in.): 1 2 Screw Size: 8 32 x 1 2 Screw Type: SHCS Outside Diameter (in.): 2. 000 Solid working face available machineable or hardened and ground Integral clamp provides high strength, non marring hold 1117 Steel for easy machineability Accu Clamp Collars combine a non marring clamp with a solid