The Genuine Innovations Air Chuck Elite Inflator features push-to-inflate technology for fast, easy, and controllable single-handed CO2 bicycle tire inflation. The all metal alloy design only weighs 17 grams, making it the lightest CO2 inflator on the market. Fits both Presta and Schrader valves and works with all Genuine Innovations 12, 16, and 25 gram threaded CO2 cartridges, and Big Air! (Will not work with 45 gram cartridges.) Includes one 16 gram and one 20 gram threaded CO2 cartridge, and features a Limited Lifetime Warranty.