Engineered for high-volume performance and long-term durability - The Steel HV Floor Drive 3.5 is a high-end bicycle floor pump featuring a machined aluminum base, a larger, durable steel barrel, and piston attached to an ergonomic varnished wood handle- offering 25% more air-volume per stroke for faster inflation on larger tires. Equipped with a highly accurate 3.5" gauge to (100psi/6.9bar), an extra-long, high-strength hose, and the Presta and Schrader compatible ABS-1 Pro Chuck for fast, precise, reachable inflation.