Rigid Shaft Coupling, 2 Piece Clamp, Inch, Bore Dia. 5/8 in, Steel, Finish Black Oxide, Outside Dia. 1 1/2 in, Overall Length 2 1/4 in, Without Keyway, Clearance Dia. 1.5 in, Screw Size #10-32. This item has been restricted from sale in the following state (s): []