Hope's lightweight Pro II rear disc hub represents the next evolution in hub design with performance and durability capable of handling your aggressive style. The hub body is machined from a solid billet of 2014 T6 aluminum and features features 4 high-quality sealed cartridge bearings and a 6-bolt, ISO disc rotor mount. The hub's one-piece, 7075 aluminum freehub body has four pawls that engage the twenty-four tooth steel ratchet fixed into the hub shell and sealed with a frictionless, non-contact labyrinth seal. Sram/Shimano 9/10-speed compatible. Black, silver, blue, grey, red or gold.