Lezyne steel floor drive tall abs2 track pumpthe lezyne steel floor drive track pump is a high pressure floor pump with an large 25 inch precision 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 pressurea machined aluminium base with a steel barrel and piston and an extra long high strength hose with composite matrix couplers make this a durable pump designed for performance the steel floor