Homeade Roller Furling

Homemade roller furling made from bicycle sprocket, threaded rod, u bolt and hasp. $10.00. The good thing is the metal on the bike sprocket is thick and strong, its stainless or chromed so it doesn't rust and the nuts are stainless along with the hasp. I am not a professional sailor, but I tinker a lot and spending hundreds of dollars for this seemed a bit much. Just an idea to throw out there for consideration.....