Thanks for choosing Geared steel products sprockets. Geared Steel Products uses type 305 stainless steel to manufacture our products. In doing so Geared steel products sprockets are stronger and more durable than any other sprocket on the market today. Please select below witch type of  bike you have to view or purchase one of our products. If you do not  see what you are looking for please feel free to contact us. (864)228-7535