DurableFlexibleCompatible with all tiresAssembly without rim holderWith the extension, your tires will always be filled properly.It does not matter which means of transport or tire model you use.For the assembly of the extension with few exceptions no rim holder is required.Save on unnecessary tire pumping problems by buying this extension.To the extension, you only have to screw it on, then fix it and the pumping can be done. It does not matter if it's a small or a big tire.even low-keyMaterial: brassWeight: . 30gColor: yellowAngle: about 90 degreesOverall length: . 37.5 mm / 1.48 inchesHeight: about 12.5 mm / 0.49 inches: 2 piecesPackage Contents:2 x valve extensionOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.