Designed to provide you with a better sports’ bicycle experience the PRO Micro CO2 Inflator is ideal for weight conscious mountain and gravel bike racers. Weighing just 16-grams it provides a reliable and controllable, rapid, reinflation thanks to an internal spring valve feature in it’s super compact and minimalist design. The Micro CO2 Inflator is compatible with both Presta and Schrader valves.