Further improving on the Rotator V3 the Demolition Rotator V4 Pro Freecoaster Hub again revamps & reworks the internals for Ryan " Biz" Jordan's signature Demolition Hub. The hub shell is built from 6061-T6 aluminum & paired woth a 14mm heat-treated chromoly axle that features an allen insert for easy removal. It also features triple wide driver bearings with an all new clutch & spring that drastically reduces drag while back pedalling, making this hub crankflip ready. The Demolition Rotator V4 Pro Freecoaster Hub comes with drive side & non-drive side guards & 3 slack washers for adjustments. section Product Specs HUB TYPE: Freecoaster AXLE: 14mm DRIVER: 9t DRIVE SIDE: Left Side Drive SPOKE HOLES: 36h WEIGHT: 652g (1.44lbs)