don't bother unless you want it as a spare. I've spent many years and many dollars repairing props only to find that they are never the same as a new one-- but a new one costs too much to replace after every rock encounter! While fishing in Voyagers National Park(the mother of all rocks) I was introduced to the coolest thing ever! A prop w/ replacable blades, They are awsome! I won't waste time telling you- go to thier site. www.piranha.com Order the kit, it does not cost any more than a new aluminum prop, comes w/ spare blades and it will laugh at rocks. I 've broken one blade in 6 years, I blame that on a conspiracy in Windsor, Canada!, I changed it from inside my boat in about two minutes. Any ? gilbertsonenterprises@hotmail.com good luck!! Dale