TUBIBOOSTER XDescription: An aluminum air chamber with inflator head that stores an air charge of one liter, up to 200 psi 14 bar. Works with a floor pump to quickly fill your tires and ensures proper installation on a tubeless rim at home. Once you flip the selector from CHARGE to INFLATE mode, air bypasses the chamber as you use the floor pump to inflate your tire to the perfect pressure. An integrated flexible hose with pump head works with Presta and Schrader