Lezyne Trigger Speed Drive CO2 Inflator w Anti-Freeze Sleeve Lezyne Description The Lezyne Trigger Speed Drive CO2 Inflatory features a CNC machined aluminum dispenser with brass internals for long lasting function and quality. The Trigger Valve Operation allows for easy and controlled inflation. The special Slip Fit head presses onto Presta valves only, while the Neoprene sleeve insulates your hand from cold during discharge. Compatible with threaded CO2 cartridges. Includes one 16g cartridge.