The X CHRIS KING 42MM Tubeless Valves by Peatys were created in collaboration with Chris King.;They are fully compatible with almost all tubeless systems from road, gravel or MTB to DH. The tapered shape of the sealing rubber and the locking O-rings under the nut protect the rims from scratches and guarantee a perfect system seal. The valves come with a centring key for the standard 3.4mm nipple and a key for removing the inner part of the valve.