85 in, Collar Width 1 3/8 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 2-Piece, Screw Material Alloy Steel.Shaft Collar, System of Measurement Inch, Bore Type Round, Bore Diameter 3 11/16 in, Bore Thread Size Not Applicable, Collar Outside Diameter 5 1/2 in, Inside Height to Flat Not Applicable, Clearance Diameter 5.