The Air Tool MTB Mini pump by Specialized excels in small size, efficiency, and reliability. Its inverted dual chamber design increases air moved by 20% per stroke, reducing pumping time. The twist locking head adapts to Presta or Schrader valves, while the machined outer barrel ensures a secure grip. Crafted with aluminum inner and outer chambers, it guarantees durable performance. Conveniently mountable with the included water bottle boss frame bracket. Max pressure: 60 PSI (4.1bar), Volume-per-stroke: 55cc.