The Air Booster pump is an incredibly small, lightweight and easy to use CO2 inflator. The pump is precision CNC machined from aluminium. The Air Booster's angled CO2 pump head is compatible with galus and auto valves. The special design of the CO2 pump allows you to adjust the air flow when filling the tire. The pump is compatible with a standard threaded CO2 cartridge. Protective silicone sleeve included.* Use only Topeak CO2 cartridges. Material: cnc aluminium (thickener), silicone rubber (sleeve) Dimensions: 4.4 x 3.7 x 1.5 cm (thickener), 5.9 x ø2.8 cm (sleeve) Weight: 22.5 g (inflator), 11 g (sleeve) Nozzle: Auto/Gallus valve, integrated dust cap, release button Art.No.: TMB-2