Rigid Shaft Coupling, Bore Diameter 1 5/8 in, Bore Diameter 2 5/8 in, Bore Type Round, Clearance Diameter 1.51 in, Coupling Construction Two-Piece, Coupling Material Stainless Steel, Coupling Outside Diameter 1 5/16 in, Different Bore Sizes No, Keyway Depth 1 Not Applicable, Keyway Depth 2 Not Applicable, Minimum Bore Diameter 5/8 in, Keyway Width 1 Not Applicable, Keyway Width 2 Not Applicable, Maximum Bore Diameter 5/8 in, Maximum Speed 4,000 RPM, Maximum Torque 475 in-lb, Overall Length 2 in