The PYN rear hub guard features a 7075 aluminum core with replaceable plastic sleeve. Designed to fit on any regular axle hub. Replacement sleeves available in all colours. The hubguard is threaded to fit onto 14mm axles replacing the cone nut. It also includes 1 spacer, in case you need to space the hubguard further away from you hub flange. (Note: you might also need one 14mm washer between the hubguard and bearing.) This hubguard works great with the Animal Javalin Cassette hub. It also works with Odyssey, Demolition Rogue, Shadow Raptor, Salt, Cinema, and possibly others.