We often encounter the car accidents caused by the flat tire and abnormal friction. These are normally triggered by the tire that full with too high or low pressure, or suffered from high temperature. This tire pressure pencil can instantly be used to test the pressure condition of your car, and effectively prevent the accident caused by this. Features - Color: Shown in the pictures. - Material:Stainless Steel. - Size: Approx. 14 x 2 x 0.8cm/ 5.5 x 0.8 x 0.32 inch (LxWxH). -Alloy connection mouth of and density. - Strongly constructed structure and design with maximum endurance for long-lasting durability. - Can be used at any time and any places without battery powering. Pocket size for convenient carrying during travel. - Precise and instant to test tire pressure of your vehicle for more safe driving.