The Shimano Deore Rear Hub is a 10-speed aluminum hub designed for hybrid bikes, cyclocross bikes, hardtail bikes, and mountain bikes. It has 32 spoke holes, a 10x135mm QR attachment style, and a 6-bolt disc brake type. The hub is compatible with Shimano brand components and has a freehub/driver. The model number is FH-M525A and it comes in black. This hub is sold individually