Lezyne macro floor drive digital track pumpthe macro floor drive digital pump offers outstanding value, as despite falling under lezynes entry level range, both the barrel and piston are constructed from a durable steel. It also features an ergonomic, sleek composite matrix handle and base, a precision digital gauge, and an extra long hose with abs1 chuck. When in use, its ultra rigid construction ensures it doesnt flex as you quickly get up to your desired pressure.features material steel barrel and piston composite matrix handle and base ergonomic handle 1.6 digital gauge with lcd display 1 year battery life under contact use ultimate accuracy within 3% extra long hose with dual valve chuck abs1 equipped compatible with presta or schrader valves max pressure 220psi 15.1bartechnologies abs 1 pro chuck lezyne's air bleed system abs chuck allows effortless attachment and removal of the pump to your valve stems. Lezyne's abs chuck will thread on to both presta and schrader valves and features a simple button mechanism for easy pressure release. This allows you to remove the hose from the valve with no effort and no fear of pulling your valve core out.buy lezyne accessories from chain reaction cycles, the world's largest online bike store.