The larger end fits the 6-splines of the 9mm OD of the threaded eyelets of the "FORE drilled rim adapters" found on rims such as the Mavic XM819

Diameter: 33mm

Weight - 170g

Charging Method and Time: To charge the SeeMee 20 you simply open up the silicone port cover on the back of the light

Mount: They feature a 22

Shimano HB-M8010 Lock Ring & Washer For Centrelock Wheels PDP|Option The larger end fits theIf you are chasing a replacement brake rotor Lock Ring for Shimano Centrelock Hubs then this is what you need. Fits all 15 20mm Thru Axles and screws onto all Shimano Centerlock front hubs. These are a 16 notch with a 44mm OD. The require a specific lock ring tool to correctly install. This model replaces the older SM HB20 Lock Ring