2 1/4 truck valve extensions are made of nickel plated brass and include a long skirt and a high heat cap. Made for use with trucks or buses to extend existing tire valve, these extensions have a .305-32 thread size and an overall effective length of 2 1/4. Product Features:2 1/4 total effective lengthHigh heat cap with a thread size of .305-37For use with trucks or buses
