The Lezyne SPORT GRAVEL DRIVE is a premium large pump for gravel bicycles, specifically with tubeless tyres. Its chucks provides more air circulation for installation of tubeless tyres. The barrel and piston are made from premium durable steel and are mounted to a robust base made from a composite. Pumping is versatile and more versatile thanks to the extra long flexible tube and bigger dimensions of the manometer (3,5 ”) that provides detailed measurements up to 100 PSI (6,9 BAR). The classic wooden handle looks stylish and is very comfortable to use.