DT Swiss 240s Rear Hub 28h 12x148mm Thru Axle, Boost Spacing, 6-Bolt Disc Press-fit end caps allow tool-free maintenance and conversion Stainless steel ball bearings Contact-free seals and high precision build guarantee smooth bearings Patented Star Ratchet mechanism(18T) Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed