Accurate and efficient: Different colors on the bar indicate different ranges. Red range: 0 - 3/32; Yellow range: 3/32 - 6/32; Green range: 6/32 - 32/32. Allows for quick and easy reading and calibration. Reusable: Tire tread gauge is made of durable material, reusable and long-lasting. An effective tool for monitoring tire tread depth and supporting safe driving. Measurements: Gauge measures 3.35 x 1.06 inches. Compact size with a pocket clip for portability. Can be clipped to a pocket for quick and easy access. Simple to use and easy to read: Features three color-coded zones for added convenience, providing a clear indication of tire condition. Offers quick and accurate tread depth measurement. Color: Silver & Green Material: Metal Package Contents: 20 x Tire Tread Depth Gauge Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.