The lezyne sport drive hv pump features a barrel and shaft that are made of aluminium with a composite matrix handle and end caps the overlapping handle and barrel with oversized piston and shaft are integrated into a compact design so you can have this bike pump handy at all times without it taking up extra room equipped with the flex hose which guarantees a secure threaded connection on both presta and shrader valves the lezyne sport drive hv pump is a winner for everyone