The Lezyne Twin Kit is a compact, all-in-one tire repair kit. It comes with the new Twin Speed Drive, two threaded 16g CO2 cartridges, Lever Kit, and a neoprene/velcro strap to hold it all together. The Twin Speed Drive is a compact, 100% CNC machined aluminum CO2 inflator. The simple Theaded Valve Operation allows for easy inflation. The Twin Slip-Fit head presses onto Presta and Schrader valves for fast engagement. The two piece head design allows O-rings to be replaced when needed. The kit easily fits in most packs and jersey pockets. 162 grams.