DescriptionThese worked perfectly. Unscrew the Presta top, put this product on, fill the tire to desired amount with tire inflater. Then you can remove them without leaking air, or just leave them on. This product will save you lots of time fiddling with the Presta connection and your small little emergency bike pump.Features- Color: Shown in the pictures. - Material: Copper. - Size: Approx. 0.9 * 0.9 * 1.8cm/ 0.36 * 0.36 * 0.71 inch (LWH). - Made with top-class copper for durable and long-lasting use. - Easy to use and install with highly working performance. - Convert a Presta to a Schrader valve, also turn a UK into a US valve. - Fit most bicycles, motorcycles, automobiles, etc.
