It's the tiny, big volume pump for big volume tires.
ANYVALVE PUMP HEAD
Works great on Presta, Schrader, and Dunlop valves. No leaking, no fuss. Clean and simple.
HIGH VOLUME
This mini pump is specifically designed to push more air per stroke, saving energy that you might need for riding.
2-STAGE TECH
Goes both ways! Whether you ride on road, off-road, or somewhere in between, the pump switches easily between high volume and high pressure to suit your pumping needs.