Rigid Shaft Coupling, Bore Diameter 1 1 in, Bore Diameter 2 1 in, Bore Type Round Keyed, Clearance Diameter 2 in, Coupling Construction One-Piece, Coupling Material Stainless Steel, Coupling Outside Diameter 2 in, Different Bore Sizes No, Keyway Depth 1 1/8 in, Keyway Depth 2 1/8 in, Minimum Bore Diameter 1 in, Keyway Width 1 1/4 in, Keyway Width 2 1/4 in, Maximum Bore Diameter 1 in, Maximum Speed 3,500 RPM, Maximum Torque 450 in-lb, Overall Length 3 in, Shaft Locking Type Set Screw