Shaft Collar, System of Measurement Inch, Bore Type Round, Bore Diameter 7/8 in, Bore Thread Size Not Applicable, Collar Outside Diameter 1 5/8 in, Inside Height to Flat Not Applicable, Clearance Diameter 1.92 in, Collar Width 1/2 in, Collar Material Carbon Steel, Keyway Width Not Applicable, Collar Material Grade 1215, Keyway Depth Not Applicable, Thread Direction Not Applicable, Center to Lever Top Not Applicable, Collar Construction 1-Piece, Screw Material Alloy Steel