This model is equipped with a large sub-air tank and can be filled with MTB high-volume tubeless tires at once. Of course, it can also be used as a regular floor pump and can be filled up to 220 PSI. When used with tubeless tires, lift the switch installed on the foot base to fill the sub-air tank, and when the switch is back, air is released at once and the beat. The large meter is located at the top of the hand for accurate air pressure measurements. Equipped with ABS1 PRO pump head that can be used without switching between French and American valves.