3/4" Accu-Mount Collar One-Piece Clamp Type, SteelSpecifications 1L012AMK UPC Code: 662786030062 Total Width (in.): 1. 000 Series: Solution Weight (lb.): 0. 49 Material: Steel Finish: BLACK OXIDE Bore Size (in.): 3 4 Screw Size: 1 4 28 x 3 4 Screw Type: SHCS Outside Diameter (in.): 2. 250 We are in the process of changing our Accu Clamp Family line to a balanced design with screw heads in opposing directions. Please contact our Sales Dept at 1 800 695 5551 or sales@staffordmfg. com with any questions