You can find all the spare parts and components you need for your bike at Escapa.
Like the Newmen Road Endcap Set Rear 12mm Gen2 90493 Wheel Adapter for Shimano Road and SRAM XDR hubs
Features:
Material: Aluminum
Hub compatibility: Newmen Road Gen2 rear hubs with Shimano Road or SRAM XDR freehubs
Axle type: 12x142 mm thru-axle
Color: Anodized black