Rigid Shaft Coupling, 1 Piece Clamp, Inch, Bore Dia. 1/2 in x 5/8 in, Stainless Steel, Finish Plain, Outside Dia. 1 9/16 in, Overall Length 1 9/16 in, Without Keyway, Clearance Dia. 1.563 in, Screw Size #10-32, Max. Torque 380 in-lb, Max. RPM 4, 000 RPM. This item has been restricted from sale in the following state (s): []