Lezyne sport gravel drive track pumpthe lezyne sport gravel drive is a powerful and versatile track pump that's intended for use with gravel bikes and mid volume sized tyres. Its tubeless specific inflation chuck can be easily flipped for use with traditional presta valves or a threaded presta shaft with the valve core removed. This provides more airflow, making it ideal for seating tubeless tyres.versatile, efficient and powerful track pumpthis track pump features a barrel and piston that are engineered 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 a precise inflation up to 100 psi 6.9 bar. And, its classic wood handle is stylish and very comfortable to use. The sport gravel floor drive is built in house, 100% quality controlled and fully rebuildable for long lasting operation.features max inflation pressure 100 psi 6.89 bar floor pump for gravel bikes mid volume steel barrel and piston with composite matrix base precision 3.5 inch gauge extra long, high strength hose varnished wood handle abs1 pro with presta valve stem chuckbuy lezyne accessories from chain reaction cycles, the world's largest online bike store.