Lezyne alloy over drive track pumpthe lezyne alloy over drive track pump is a high volume maximum flow floor pump with a large 25 inch pressure gauge lezynes new abs 2 chuck with bleed valve seals quickly and accurately to both presta and schrader valves giving the exact amount of required pressure an oversized aluminium barrel and steel piston with aluminium base with an extra long high strength oversized hose with aluminium couplers make this a durable and stylish floor pump designed fo