What Our Gearhead(R) Experts Are Saying:"I like the Twin Speed Drive CO2 Head because it's so straightforward-just press it on and it works. The slip-fit head grabs both Presta and Schrader valves without hassle, and the compact design disappears in my saddle bag until I need it. It's reliable, lightweight, and perfect for quick fixes on the road or trail."When a flat interrupts our ride, the Lezyne Twin Speed Drive CO2 Head Only gets us rolling again in seconds. Built from CNC-machined aluminum, this inflator is tough, lightweight, and compact enough to carry on every ride. The slip-on Twin Slip Fit head works seamlessly with both Presta and Schrader valves, giving us maximum flexibility no matter which bike we're riding. Inflation is quick and simple thanks to its intuitive slip-fit design, while the included neoprene sleeve insulates hands from the icy blast of CO2 discharge. Designed for threaded cartridges, the Twin Speed Drive delivers a reliable burst of air every time. It's a no-fuss solution that's built to perform when we need it most.