LEZYNE Pressure Over Drive High Volume Tubeless Compatible Bicycle Floor Pump with 2.5" Gauge - 220 PSI Tire Air Pump for Mountain/Gravel Bikes - ABS-1 Pro Tubeless Chuck Fits Presta/M6x0.8 Valve

Featuring a unique chambered design, the Pressure Overdrive bicycle pump is ideal for seating even the most stubborn tubeless tires.

The secondary chamber can be pumped up to pressure enabling a stainless steel foot-lever to release the compressed air in an immediate, continuous discharge, quickly and easily seating the tire bead.

The Pressure Over Drive bike tire pump features a durable steel and aluminum construction paired with a highly accurate and precise gauge.

An extra long, nylon-reinforced braided hose terminates in our Presta and M6x0.8 compatible ABS-1 Pro Tubeless chuck offers plenty of versatility.

NOTE: When using the Pressure Overdrive as a regular pump, you must fill the air chamber before air will begin to flow into empty tire/tube.

When topping off a tire/tube that already has pressure in it, the chamber will have to reach the same pressure the tire/tube is at first before it will begin to inflate it further.

FEATURES: - High-volume floor bike pump; - Integrated system to seat tubeless tires; - Manually pressurized secondary chamber with a stainless steel foot lever release; - Durable steel and aluminum construction; - Extra long high-strength hose; - Great for Road, Mountain, and Gravel Bikes.