Genuine innovations air chuck plus co2 inflator push to inflate technology in an ergonomic design that keeps your hand off the co2 cartridge easy to use fully controllable and works with both presta and schrader valves works with all 12 16 20 and 25g threaded co2 cartridges includes airchuck inflator with 1 20g threaded cartridge law prohibits orm d materials from shipping by air colour blackblue