Lezyne Control Drive CO2 Inflator with 25g Cartridge RedA 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 TECH SPECS size Control Drive 25g red