These Tubeless valves are made of aluminum and are very light. In black-anodized they look very sleek on your rims. Fit Schwalbe Inners tubes and Schwalbe's Tubeless Valves. Included: 2 x Valve Extenders.
Best Price: £7.00 from Merlin Cycles
Schwalbe Tubeless Compatible Valve Extensions – Black / 30mm Valve Reviews