Forged aluminum shell with 8-11 speed steel freehub body Refined gear engagement, high quality seals, and angular contact bearings All-weather durability, reliable performance and lighter weight Quick engagement 36 times/360 degree (same as current) Centerlock disc brake rotor mount Weight: 359g (FH-M8010) TECH SPECS f/r rear (HG 8-11sp)* axle/spacing (mm) 12x142 TA hole 32h color black weight 359g