This 5-valve kit is essential when cycling long or short distances. Compatible with all bicycle tires equipped with a Presta valve, including children's and adult mountain bikes, tricycles, scooters. USE STATION PUMPS: Forgot to inflate your tires before your ride? Avoid wheel damage, flat tires, and uneven tire wear caused by 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. The rubber O-rings fit snugly and prevent leakage 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 on the go, the adapter can even be placed on the tire stem so you are always prepared. It easily fits in your bag or pocket. Works great with electric or pedal scooters, as well as racing bikes.