The Lezyne Trigger Speed Drive CO2 inflator is a Slip Fit dispenser for easy, controlled inflation.The Lezyne Trigger Speed Drive is a CNC machined aluminium dispenser with brass internals. Trigger Valve Operation allows for easy and controlled inflation. Slip Fit head presses onto Presta valves only. Neoprene sleeve insulates hand from cold during discharge. The Lezyne Trigger Speed Drive CO2 inflator is compatible with threaded CO2 cartridges, comes with one 16g cartridge.WEIGHT: 26g