The Air Tool Road is a minimalistic frame pump that provides efficiency and reliability for high-pressure road tires. Inverted dual chamber design is smaller yet moves 25% more air per stroke when compared to our previous design, reducing pumping time by up to two minutes. Presta-only head with updated dust cover prevents pump from opening due to vibration. Machined outer barrel for extra grip while pumping. All-aluminum inner and outer chamber for durable performance. Water bottle boss frame mounting bracket included. Max pressure: 100 PSI (6.9 bar) Volume-per-stroke: 60cc