25B20

 This 25B20 sprocket is a durable, high quality, and precision sprocket with hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that...

25B24

25B24 sprocket has hardened teeth, which creates a longer life of the sprockets and make it more durable. It is also manufactured to meet ANSI standards so that you can be 100% sure that this sprocket and your #25 roller chain fits snugly together. 25B24...