Review on Dsycar 6 Pack Gold Metal Valve Stem Extenders - 45°, 90°, 135° - Universal Extensions for Car, Motorcycle, Bike, and Truck by Jeremy Floyd

They don't seal well and don't close. I used them for the Crossfire system as the valve stem angle on the F350 Dulie inner wheel is not suitable for mounting the system. I saw them and thought they would make the angle straighter. No matter how I put it on, it still moved and caused air leaks. Very disappointing.