The Specialized Air Tool Road Pump is a minimalistic frame pump designed for high-pressure road tyres. The Air Tool Road easily attaches next to your water bottle using the mounts provided & can get your tyres up to 100 PSI. It uses an inverted double chamber design to pump your tyres up quicker & with an all-aluminium inner & outer chamber should last you for years. Features All new, inverted double chamber design increases the air handling capacity by 25% compared to our previous design, reducing pumping time by up to two minutes. Presta-only head keeps size & weight to a minimum while the dust cover keeps the insides clean. Machined outer barrel for extra grip while pumping.. All-aluminium inner & outer chamber for durable performance. Water bottle boss mount included. Max pressure: 100 PSI (6.9 bar) Volume-per-stroke: 60cc