Item Weight:1.41 ouncesPackage Dimensions:4.06 x 2.83 x 0.31 inchesThis 90 degree valve stem extension successfully solved a series of operations such as inability to pump or check air pressure due to insufficient space between the valve and the spokes, or the inconvenient position and angle of the valve. Due to the built-in valve core, it can allow inflation and deflation, which is convenient and quick.The tire valve extension joint is made of brass, which has strong wear resistance. Equipped with rubber sealing ring and sealing cover, durable. The bottom of the extension piece rotates freely, which is easy to operate, convenient and efficient.The threaded head on the valve extenders is screwed on the existing valve stem, and the included end cap replaces the existing valve stem cover.Our valve core adapters are equipped with rubber sealing rings and sealing caps to ensure air tightness without leakage. It is recommended to tighten the sealing caps quickly after use to prevent air leakage.These dually tire valve extensions suitable for most bicycles, motorcycles, strollers, trailers, RVs with standard American tire valves.