Products from American hub specialist Onyx are now available! The Pro Disc instant-engagement rear hub is the ultimate in this product category. It allows the rider to feel no friction when pedaling, a real advantage for racers! We'll be happy to give you the spoke length for spoking this hub according to the rim used.IN DETAIL:CNC-machined hub body in Aluminium 707529 locking camsHigh flange diameter for greater rigidityCeramic bearingsDisc: ISO 6Sold without cog (compatible Shimano)Axle: 10mmAvailable only in 28 holesWeight: 436g