The Lezyne Sport Gravel Drive Floor Pump has a chuck that is tubeless specific and “flips” for Presta, or a threaded Presta shaft (with the valve core removed) to provide more airflow for seating tubeless tyres. Its barrel and piston are built from high-grade, durable steel and mounted to a rugged Composite Matrix base. Pumping is versatile and more efficient thanks to an extra long hose and a larger 3.5” (88.9 MM) gauge, which provides detailed measurement up to 100 PSI (6.9 BAR). And its classic wood handle is stylish and very comfortable to use. The Lezyne Sport Gravel Drive Floor Pump is built in-house, 100% quality controlled and fully rebuildable for long lasting operation. Lezyne Sport Gravel Drive Floor Pump Specifications Max: 100 PSI / 6.9 BAR Larger 3.5” (88.9 MM) gauge