Lezyne macro floor drive dv track pumpthe macro floor drive dv pump offers outstanding value and 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 gauge, and an extra long hose with a dual valve chuck. When in use, the ultra rigid construction ensures it doesnt flex as you inflate to your desired pressure.features material steel barrel and piston composite matrix handle and base ergonomic handle precision gauge extra long hose with dual valve chuck dual valve chuck compatible with presta or schrader valves max pressure 220psi 15.1bartechnologies dual valve chuck the lezyne slip fit dual valve pump head for lezyne floor pumps are engineered with a durable composite matrix and aluminium construction. It features a large, ergonomic aluminium locking lever and a re buildable design that allows for seals to be replaced. Compatible with all high pressure floor pumps, the dual valve head is excellent for presta, schrader, and dunlop valves. Valve type indicators are moulded directly into the body.buy lezyne accessories from chain reaction cycles, the world's largest online bike store.