The Supreme rear female cassette hub features a left/right switchable driver, allowing you to run either left hand or right hand drive using the same hub and driver. This is combined with a heat treated cromo axle and female bolts plus precision sealed bearings, all at a great price. When ordering let us know whether you would like this hub setup RHD or LHD in the special instructions. ###section### Product Specs HUB TYPE: Cassette AXLE: Female Bolts DRIVER: 9t SPOKE HOLES: 36h WEIGHT: 460g / 16.9oz