The "Tubi Booster X" is a hose that can be attached to the valve while it is placed on the ground. The air tank can be used by filling air inside with a floor pump. The large capacity of air is released, making it easy to raise the tubeless tires. Aluminum alloy/rubber/engineering grade polymer, head compatible with Presta and Schrader types, filling valve: Presta type; Fillable capacity: 1L Fillable air pressure: Up to 200 psi/14 bar (depending on the pump used); Working pressure: 1,800 psi/124 bar, L86 x W14 mm (air chamber only) 985 g 85 0 g (air cha) Bar only) Product color and size information may appear different from the actual product depending on your display type and etc. Product specifications, logo design, etc. may be subject to change for product improvement. We also cannot answer measurements or personal fit that the manufacturer does not announce. Please be aware of