Product Description Shimano Spring for Dura-Ace hub quick release as spare part The Shimano spring for Dura-Ace quick release (" Volute spring" ) is a spare part for Dura-Ace hubs and wheels of various generations - from 7700 over 7900 to WH-R9100. The conical spring also fits Ultegra 6500 quick releases. This allows you to maintain the function of your quick release for longer. Compatibility:Dura-Ace: HB-7700FH-7700HB-7800FH-7800HB-7900FH-7900HB-9000FH-9000WH-9000WH-R9100 Ultegra: HB-6500FH-6500Manufacturer Number:Y-23321000 Contents:1 x Shimano spring for quick releases Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com