SPECS:USE: RaceDRIVER: Chromoly 2-pc, sealed, Shimano cog compatibleHUBSHELL: 6061 aluminumHOLE COUNT: 28 Hole or 36 HoleAXLE: 3/8″ heat-treated chromoly with hardwareBEARINGS: Sealed all aroundINCLUDES: Rear hub, aluminum hardware, 14T, 15T, and 16T chromoly cogs
MANUFACTURERS NOTES: Durable sealed bearing hub with Shimano compatible driver that works with a wide range of cog brands. Fits sizes 12T – 18T