evo.com | Lezyne CO2 > Getting a flat is never fun. When you finally get that patch or fix in place, you don't want to spend another 20 minutes struggling to inflate your tire. This is where the Lezyne Control Drive CO2 Pump Head comes in. Just screw on a CO2 cartridge, fill up quick, and get back on track. CNC Control Knob Twists for Easy and Controlled Inflation CNC Machined Aluminum Dispenser with Brass Internals Twin Slip Chuck Head Presses on to Presta and Schrader valves Neoprene Sleeve Insulates Hand from Cold During Discharge Compatible with Threaded CO2 Cartridges | Lezyne Control Drive CO2 Pump Head 2023 in Blue | Aluminum/Neoprene