Slime 2021-A Long Dual-Head Pencil Tire Gauge for RVs and SUVs, 10-150 PSI Ideal for dually tires of RVs, trucks and SUVs Features dual foot chuck for easy reach on all tires Measures 10-150 PSI Helps monitor optimal tire inflation, minimizing tread wear and increasing gas mileage Helps save money on gas and maintenance