Tubeless-specific, generally great:
Caffélatex Valve Extension is externally threaded, so that it s possible to secure the valve to the rim and achieve air-tightness in tubeless applications. The ability of these extensions to be tightened is a plus in general, making them stable and silent also in non-tubeless applications.
their nickel-plated brass body avoid stess failures of aluminum tubeless extensions (weakened because of the internal and external threading). Strongest valve extension for mini-pump stress-test inflation.
Made in Italy.