This sale is for two rear axle bolt covers. These covers fit Harley-Davidson Big Twin 4 speed models 1973-1980, & Sportster models 1957-1980 using the OEM rear axle. They are chrome plated cast metal, and are held on by Allen head set screws. One cover fits 1 1/4" axles, & one fits 1 1/8" nuts. These easy to install covers are a nice way to clean up the appearance of your axle bolt. Thanks for looking, and be sure to check out my store for other great items you might need.