HIGH QUALITY MATERIALSUsing high quality sponge material, aluminum alloy CNC machining, this bicycle inflator ensures that all parts are durable and have a long service life. With CoverSponge CoverBike Nozzle Adapter comes with a sponge protector, which provides good frost protection. CO2 cartridge not included. This product is small in size, easy to carry, and can be used to inflate tires while riding. Easy ControlThis bicycle inflator is equipped with a reliable adjustment switch, which is easy to control and has no leakage. This CO2 inflator is compatible with Presta/Schrader valves on bicycle tires. You simply attach the end of the mouth to your bike tire, inflate it in seconds and reinstall it quickly. 2 VALVESConvenient dual valve head controls inflation by locking and unlocking the air control valve and tightening the screws. Service GuaranteeWe provide 100% perfect customer service. If you have any questions, please feel free to contact us. We will do our best to help you solve the problem.