An aluminum air chamber with inflator head that stores a one liter charge of air, up to 200 psi / 14 bar. Works with a floor pump to quickly inflate your tires and ensures proper installation on a tubeless tire at home. Once you switch the "CHARGE" mode selector to "INFLATE", air bypasses the tube while you use the floor pump to inflate your tire to the perfect pressure. An integrated flexible hose with pump head works with both Presta and Schrader valves and eliminates valve stem stress while pumping.