Two replacement slip cinch bolts with nuts and lock washer used to cinch slip clutch hubs to the gearbox shaft. This bolt kit is for a 1-3/8" X 6 spline clutch hub, other specification hubs may require a different mounting bolt. We sell all of the replacement parts for the rotary cutters. If you don't see the parts you need listed please contact us we would love to earn your business. We are listing new items frequently so please check our store often. See position 5 in the exploded view drawing. Replaces Code: 6141270 We stock a wide variety of replacement parts for Agricultural Equipment please contact us if you have any questions or if you would like more information.