Keep the Lezyne Control Drive CO2 25G handy on longer road jaunts and spirited trail rides where low tire pressure and pinch flats are bound to happen. The Control Drive comes with one 25-gram CO2 cartridge for quick inflation of high-pressure road tubes/tires and standard trail tubes/tires. It works with both Presta and Schrader valves for maximum convenience, with an insulating sleeve to protect your hands from freezer burn during inflation.