The Lezyne CNC Dirt Floor Drive V2 ABS Track Pump is the ultimate precision high-volume floor pump optimized for use with mountain bike tires. All parts are custom CNC-machined aluminium for an extremely durable design. The barrel, piston, hose & connectors are oversized to deliver double the air flow per stroke to quickly fill tires & seat tire beads on tubeless tire systems. ABS Flip-Thread Chuck & 43" 130cm rubber hose easily reach Presta & Schrader valves. The 2.5" oversized gauge is precise & easy to read. The anodized high-polish finish makes this pump stylish & durable.