Female AchseSpoke holes: 36h Cassette hubAxle type: 3/8"x24tpi crmo female boltsDriver: 8T or 9TDriver bearings: fully sealedDriver pawls: 4 pawls design switchableHub shell bearings: sealed bearingsExtra info:RHD & LHD "SDS" system, allows switching the driver direction from rsd and lsd with the same hub,allen key inner axle for easy maintenance,updated ratchet ring design, for improved strength,axle design prevents damage to threadsWeight (kg): 0.488Color: black, gold, oilslick, high polished