... range: 10-50psi or 10-100psi 5. 6 designs Pencil tire gauge·Chrome-plated zinc head, aluminum tube·4 side plastic bar ... can lose one pound per month under normal conditions. Proper tire pressure improves gas mileage, handling, braking and durability.Caution:To ... not exceed maximum pressure on gauge.Dropping or severe jarring may impair accuracy of gauge. Metal tire pressure gauge, pen clip, lot of 6, ...