Product Description Zipp ZM900 End Cap Set for RockShox Torque Cap for Front Hub These end caps are compatible with the Zipp ZM900 front hub with a Boost installation width of 15 x 110 mm. They are two caps with a 31-mm contact surface, which allow mounting on RockShox Torque-Cap suspension forks. Two O-rings are supplied. The ZM900 Disc-6-hole hub is used in the 1ZERO HiTOP S MTB wheelset. Compatibility:ZM900 front hub1ZERO HiTOP S front wheelManufacturer Number:11.2028.062.004 Contents:1 pair of Zipp ZM900 front Torque Cap end caps2 x O-Ring Manufacturer: SRAM LLC 1000 W. Fulton Market 4th Floor Chicago IL 60607 USA info@sram.com Distributor: SRAM Europe Sales and Services B.V. Paasbosweg 16 3862 ZS Nijkerk Netherlands info@sram.com