K72-40359 Limit/Drive Shaft Assembly, Complete with: Limit/Drive Shaft, Bearings, Limit Nuts, Sprocket 41B20 1/4" Keyway Includes 2 Set Screws, Woodruff Key 1/4"x7/8", Shim Washer 1"x1.5"x.01", Shim Washer 1"x1.5"x.031", Hex Bolts 3/8-16x1, Flange Nuts 3/8-16 and E-Ring 1".