Planet Bike's Black Zeppelin CO2 bike inflator is ultra light, sleekly designed and easy to use. It's precision-machined for strength and reliability. The pierce indicator on the Airflation™ control knob let's you know when the cartridge has been punctured and the device is ready to inflate your bicycle tire. It accepts all types of threaded cartridges and works with Presta and Schrader valves without the need for an adaptor. It'll make quick and accurate work of road side repairs so stash it in your bike bag or jersey pocket and away you ride.