Effetto Mariposa Caffelatex Valve Extension 45mm (x2)Seen the increasing number of tubeless road wheels and tyres, tubeless specific valve extensions are needed to use normal tubeless valves on higher profile rims. CHARACTERISTICS: externally threaded, to secure the valve to the rim and achieve air tightness (tubeless applications); 45mm length, best for 60mm rim profiles; nickel plated brass body, to avoid stess failures of aluminum tubeless extensions (due to the internal and external threading); made