UNIVERSAL COMPATIBILITY: This valve adapter easily converts the Presta valve of your electric bike or scooter into a Schrader valve, allowing you to inflate your tires with a wide range of pumps. This kit of 5 valves is essential when traveling by bike over long or short distances. Compatible with all bicycle tires equipped with a Presta valve, including children's and adult mountain bikes, tricycles, scooters. USE THE STATION PUMPS: You forgot to inflate your tires before your exit ? This adapter allows you to easily inflate a bicycle inner tube with a Schrader valve at a gas station, even if no manual pump (or CO2 cartridge) is available. Avoid wheel damage, punctures and uneven tire wear from pedaling with low pressure tires. Simply attach the adapter to inflate or check your tire pressure. HIGH-QUALITY BRASS: Made of high-quality solid brass, this electric motorcycle valve adapter is built to last with precision threads for attaching to an air pump. Rubber O-rings fit snugly and prevent leaking during use. Comes with 5 caps for Presta valves and 5 caps for Schrader valves. SMALL AND COMPACT: This small, pocket-sized Presta valve adapter can easily be taken with you when traveling, the Adapter can even be placed on the tire stem so you're always prepared. It fits easily into your bag or pocket. Works perfectly with electric or pedal scooters, as well as racing bikes.