This is a 10 tooth Burco oil engine clutch. Fits adapter shaft on IAME foreign engines. Internals look good. Drum inside diameter looks good. Shoe outside friction surfaces look good. Outside cover has chain rash. Sprocket teeth look decent. Some parts are available from Burris Mfg. and Mike Berg on vintage forums. Please examine photos and ask questions before bidding. This is a vintage racing item so no warranty or return. No international sales. Please see my other auctions. Thanks.