The best road mini pump does two things—inflates tubes quickly & efficiently & it also stashes easily. This reliable little guy does both. Now available with a traditional frame-mounting bracket the Air Tool Road Mini pump moves almost twice as much air as its predecessor with its inverted double-chamber design. It gives you total peace of mind on days when pesky flats catch you off-guard. Inverted double chamber design is smaller yet increases the air handling capacity by 58% when 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-aluminum inner & outer chamber for durable performance. Water bottle boss mount included. Updated dust cover design prevents pump from opening due to vibration. Max pressure: 100 PSI (6.9 bar) Volume-per-stroke: 30cc Water bottle boss frame mounting bracket included.