A compact, 100% CNC machined aluminum CO2 inflator * Threaded Valve Operation allows for easy inflation * Twin Slip-Fit head presses onto Presta or Schrader valves for fast engagement * Two piece head design allows O-rings to be replaced when needed * Comes with Twin Speed Drive head, two threaded 16g cartridges, Lever Kit, and a neoprene/Velcro strap to hold it all together