Schwalbe SCV - Tubeless CLIK Valve CLIK 40mm Pair ModelNumber=MODI12 and 12 speed chains except

and 12 speed chains except Shimano 12spd chain

Chainring BCD SRAM Thread MountColor Black

Designed for Wolf Tooth rear axles with a female threaded head-end

Some open slots for Bontrager tools

Schwalbe SCV - Tubeless CLIK Valve CLIK 40mm Pair ModelNumber=MODI12 and 12 speed chains exceptSchwalbe Tubeless Clik ValveEasy Operation: One handed use; simple "click" mechanism for attaching and detaching. Designed to be very user friendly, even for children. Compatibility: Clik Valve compatible pump head or adapter (Recommended). Can be inflated with Presta valve (SV) pump heads witha rubber gasket compression fit (threaded pump heads are not compatible). Performance: Offers 50% higher air flow than standard tubeless valves, improving