Rigid Shaft Coupling, Bore Diameter 1 20 mm, Bore Diameter 2 20 mm, Bore Type Round Keyed, Clearance Diameter 48.9 mm, Coupling Construction Two-Piece, Coupling Material Carbon Steel, Coupling Outside Diameter 42 mm, Different Bore Sizes No, Keyway Depth 1 2.9 mm, Keyway Depth 2 2.9 mm, Minimum Bore Diameter 20 mm, Keyway Width 1 6 mm, Keyway Width 2 6 mm, Maximum Bore Diameter 20 mm, Maximum Speed 4,000 RPM, Maximum Torque 350 N-m, Overall Length 65 mm, Shaft Locking Type Clamp On