Wheel Masters Set-4 Two 13" Straight/ Two 9-1/2" 90 Deg Rubber Valve Stem Extension 17-1910

Hub mount stem extender can be used with 16-19-1/2 inch diam wheels. Easy to install, no special tools required, the hoses attach to your existing valve stem (no need to remove valve core) allowing proper inflation and pressure checks in seconds. It is made of ply two rubber.