Serfas' AP-C1 is a combo CO2 inflator and mini pump, giving you the best of both worlds. It fits 12- and 16-gram threaded cartridges for the ultimate in versatility. The trigger mechanism and the large, easy-to-read gauge let you perfectly control inflation. The inflation head accepts both Prest and Schrader valves. Plus, it includes a threaded 16-gram cartridge to get you started and a mounting bracket to keep in on your bike.