Blocked a valve core? Crushed a rubber or snapped an o-ring? No problem, This service kit* has everything you need to spruce up your valves when swapping to your next set of wheels or new bike. Package contents: 2x black valve cores. 2x rubber o-rings. 2x rubber crush cones. *Compatible with all Peaty's Tubeless Valves. Customise your valves! We also make Accessory kits with fresh lockrings, spoke key and valve core remover caps available in all colours.