LEZYNE Control Drive Co2 PROFESSIONAL QUALITY MATERIALS - Lezyne's CNC machined aluminum dispenser with brass internals is built to last and won't add much weight or bulk to saddle packs or jersey pockets with a weight of just 16 grams. EASY INFLATION - Inflate a tire in seconds with our CNC control knob for easy and controlled inflation. Twin Slip Chuck head threads on to Presta and Schrader valves. NEOPRENE SLEEVE - Included neoprene sleeve insulates your hand from the cold during discharge. No frozen fingers when operating SECURE CONNECTION WITH NO LEAKS - Lezyne's CO2 Inflator is compatible with any threaded CO2 cartridge. Includes one Lezyne 16g CO2 cartridge. A PASSION FOR DESIGN - Every product comes from a combination of a love for cycling and a passion for design. Our products are intelligently engineered and designed, and functionally complete.