Chosen 150T Boost Sealed Bearing Rear Hub - 32 Hole - SRAM XD 11 / 12 SpeedChosen 150T Boost Sealed Bearing Rear Hub 32 Hole SRAM XD 11 12 Speed This high performance boost MTB hub features 32 spoke holes and is compatible with 12 gauge spokes, making it ideal for sturdy and durable Mountain Bike wheel builds. It comes with a 12mm thru axle and is available in 148mm boost spacing. The hub includes sealed bearings for smooth operation and long lasting durability. It's equipped with a SRAM XD freehub and supports 6 bolt disc