The Shimano HB-M525A Front hub is, in contrast to almost all other Shimano hubs, compatible with 6-hole disc brakes. It can be used on mountain bikes. The conical bearing convinces with super-polished bearing races and low-friction function. The hub body of the HB-M525A is made of anodised aluminium, the axle and freehub are made of steel. A quick release with aluminium lever is included.