Pressure-free; Compatible with all tires; Mounting without rim holder With the extension, your tires always be filled properly. It does not matter which means of port 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 assemble the extension, you just have to screw it on, then fix it and you can start inflating. It does not matter if it's a small or a big tire. even very deep-seated valves do not matter. Material: brass Weight: . 30g Color gold Angle: about 90 degrees Overall length: . 37.5 mm Height: about 12.5 mm Quantity: 2 pieces Package content: 2 x valve extension Only 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.