Ordered this prop with some trepidation: never have tried to replace a prop and had no idea what I was getting into. This prop replacement was a total cake walk. Everything but grease was included in box. To replace: loosen the nut, remove washers, prop simply pulls off. Re-grease, replace new prop, new washers, replace nut, tighten. You're DONE! Probably the easiest repair I've ever made to a pontoon boat!!!