Lezyne digital over drive abs2 track pumpthe lezyne cnc over drive track pump is a high volume maximum flow floor pump with an extremely accurate digital 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 the digital pressure gauge is precise to within 3 and easy to read with an auto shut off facility the battery will last 1 year under constant use an oversized aluminium barr