Long zinc alloy dual-head design: Straight-foot air chuck for inner wheels or hard-to-reach valves; 30-degree reverse chuck for outer wheels. A good choice for testing tire pressure and also a practical gift for Father's Day. Accurately measure tire pressure: Dual-scale ABS bar calibrated 10-150 psi / 1-10 bar; 2 psi increments; easy-to-read scale. Suitable for semi-truck, car, SUV, RV, ATV, bus with Schrader valve. Heavy-duty well-built construction: Zinc alloy chuck with solid brass core; chrome-plated steel body; hanging ring for easy storage. No battery required; built to endure harsh environments. How to use: Push the gauge’s chuck onto the tire valve; the scale will slide out to reveal the pressure reading. After adjusting the tire pressure, screw on the valve caps. Use scenarios: - Regular tire checks on a family car, SUV, or light truck before long trips. - Routine maintenance for fleet vehicles, service vans, or delivery trucks with Schrader valves. - Tire checks on RVs, buses, or trailers during road trips or at rest stops.