Lezyne Control Drive CO2 w/ 16g CartridgeA durable CO2 dispenser constructed from CNC machined aluminum, the Control Drive CO2 features control valve operation for easy, controlled inflation and a Twin Slip Chuck head which presses onto both Presta and Schrader valves. A neoprene sleeve insulates your hands from the cold during CO2 discharge. Available with a 16g cartridge, a 25g cartridge, or as only the inflator head.