The Topeak Tubibooster X is an aluminium air chamber equipped with an inflator head. It has a one-litre capacity and can hold up to 200 psi / 14 bar of air pressure. This air chamber works in conjunction with a floor pump to quickly fill your tires. It is also designed to ensure proper installation on a tubeless rim at home.To use the Tubibooster X, simply flip the selector from "CHARGE" to "INFLATE" mode. This allows the air to bypass the chamber as you use the floor pump to inflate your tire to the perfect pressure. The Tubibooster X comes with an integrated flexible hose with pump head, which is compatible with Presta and Schrader valves. This hose helps to reduce stress on the valve stem while pumping.Key Features:- Compatibility: Works with Presta Pumps- Air Chamber: One litre, stores up to 200 psi / 14 bar of air pressure (Varies with the pump capacity)- Working Pressure: 1800 psi / 124 bar- Tyre Valve Compatibility: Presta / Schrader valves- Material: Aluminium / Rubber / Engineering grade polymer- Size: 36 x 11.4 x 8.6 cm / 14.2" x 4.5" x 3.4" (Total) / 28.5 x ø8.1 cm / 11.2" x ø3.2" (Air chamber)- Hose Length: 26cm- Weight: 985 g / 2.17 oz (Total) 820 g / 1.81 lb (Air chamber)The Topeak Tubibooster X is a high-quality accessory that will make inflating your tires a breeze. Its durable construction and compatibility with both Presta and Schrader valves make it a versatile and reliable tool for any cyclist.