Rigid Shaft Coupling, 1 Piece Set Screw, Inch, Bore Dia. 3/4 in, Stainless Steel, Finish Plain, Outside Dia. 1 1/2 in, Overall Length 2 in, Without Keyway, Clearance Dia. 1.5 in, Screw Size 5/16 In. -18, Max. Torque 338 in-lb, Max. RPM 3, 500 RPM. This item has been restricted from sale in the following state (s): []