The STEELMAN 97813-6PK Pencil Air Gauge 6 pack will help you get the most out of not just your tires but your car or truck too. When properly inflated your tires can last longer and even save you money at the pump by helping your car get better fuel mileage. These handy gauges have sturdy yet lightweight brass internals that are zinc plated to prevent corrosion and have a deflator knob on the back to easily lower tire pressure if you accidentally overinflate them. The bright white plastic reader bar has high contrast black lettering to make it easy to read. Able to quickly and accurately read tire pressures from 5 to 50 PSI these tools meet ANSI B40.1 (ASME B40.100) and CARB regulation criteria for accuracy at +/-1 PSI.