Product Description Shimano dust cap for Center Lock brake rotor mount - For covering With the Shimano dust cap (Rotor Mount cover) you can cover the brake rotor mount on certain center lock hubs. This is recommended if they are not ridden with disc brakes. The exact hub compatibility can be found in the list below. Compatibility:HB-M785HB-M775HB-M615HB-M595HB-M435HB-M4050HB-T708HB-T665HB-RM66HB-RM35FH-M785FH-M775FH-M665FH-T665FH-M629FH-M615FH-M595FH-M435FH-M4050FH-RM66FH-RM35WH-M505WH-S500Manufacturer Number:Y-25Y06000 Contents:1 x Shimano Center Lock mount dust cap Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com