Smart color-coded: 3 different colors on the scale clearly show the result of your tire's condition, providing simplicity and convenience for you. Areas clearly marked: red area on the scale: 0 - 3/ 32; Yellow area on the scale: 3/ 32 - 6/ 32; Green area on the scale: 6/ 32 - 32/ 32; These clear and accurate markings allow for easy and quick reading. Simple and convenient to use: this tire depth gauge is an effective tool for monitoring tire depth; And you can use it cost-effectively without needing to charge. Portable depth gauge: the tire depth gauge is approx. 3.35 x 1.06 inches in size; It has a pocket clip for easy carrying, you can attach it to your pocket, good for quick and convenient use. Quantity: you will receive 10-pack tire depth gauges in the package, enough for your spare parts and replacements in everyday life; You can also send some to your family and friends. Specification: Material: metal, plastic Overall length: approx. 3.35 inches/ 8.5 cm Barrel diameter: approx. 0.4 inches/ 1 cm Plastic end (L x W): approx. 1.1 x 0.4 inches/ 2.7 x 1 cm