The Infinite Apogee is a powerful and reliable pump for the hard-riding mountain biker. It features a compact and quality-made design that gets your tyres back to your desired inflation when your chosen route gets the better of them. This pump has a durable and stylish construction that houses a retractable and removable steel-mesh hose, so you can either manually inflate your tyres or attach one of the included CO2 cartridges to the hose for an effortless blast of air to get you back rolling again. Presta and Schrader-compatible, the Birzman Infinite Apogee pump is an excellent addition to any kit bag. Specification Head: Snap-It Apogee (Presta / Schrader). Barrel: CNC machined aluminium. Size: 25.5 x ∅2.5cm. Weight: 175g. Includes: 2 x 16g cartridges & 1 neoprene grip. Capacity: 90 psi / 6.2 bar. Patent: Taiwan M-448568.