The Lezyne Macro HV high-performance air pump features a steel barrel and piston with a composite matrix base, ensuring durability. Its oversized barrel expedites inflation, while the composite matrix handle offers comfortable grip. Equipped with an extra-long, high-strength hose and matrix couplers, it guarantees secure attachment. The 3.5" gauge displays pressure in both PSI and bar (100psi/6.89bar), enhancing accuracy and usability for various inflation tasks.