Rigid Shaft Coupling, 1 Piece Set Screw, Inch, Bore Dia. 1 in, Stainless Steel, Finish Plain, Outside Dia. 2 in, Overall Length 3 in, Without Keyway, Clearance Dia. 2.0 in, Screw Size 5/16 In. -18, Max. Torque 450 in-lb, Max. RPM 1, 800 RPM. This item has been restricted from sale in the following state (s): []