Quick and Easy: Faster and effortless than ordinary pumps, inflate a tire in just seconds. Compatible and secure connection It is easy to install the Presta Schrader valve and its 2-in-1 inflation head is a waterproof rubber ring built into the inflation headCNC cutting machine allows the cartridge to be mounted easily with minimal gas loss, suitable for various sizes of threaded CO2 cartridges ( 12g, 16g, 20g & 25g). The insulating sleeve (for 16g cartridges ONLY) for the cartridge prevents your fingers from freezing when you release the CO2. Small and portable The small size can be held in your hand, purse or your pouch with ease. The weight of the sleeve and the inflator head is only 32 grams, which is smaller and more compact than the general pump. Professionally made and machined: Made of alloy of high strength, hard and quality aluminum; Twist the lever design, it gives you better control over the flow of CO2 entering the tires; Anodic oxidation technology can overcome the defects of surface hardness and wear resistance of aluminum alloy, and extend the service life. How to use 1.Put the sleeve EVA on the CO2 cartridge; 2. Check that the inflator is in the closed position and screw in a CO2 cartridge clockwise; 3. Tighten the C02 2-in-1 inflator head on the Presta or Schrader valve, turn the lever counterclockwise to inflate.