At a mere 16 grams, the Lezyne Control Drive Co2 Inflator is a must-have on your bike. This CNC machined aluminum dispenser features a Twin Slip Chuch head that works with both Presta and Schrader valves. Simply thread your cartridge on and twist the control knob to dispense air quickly. It's easy to use, works with both 16g or 25g cartridges and includes a Neoprene sleeve to protect your hand from the cold as it discharges. Cartridges are sold separately.