1.GLOW-IN-THE-DARK SCALE: The scale bar of tire tread depth gauge absorbs ambient or artificial light during the day and emits a soft, long-lasting glow in low-light or dark environments—Suitable for nighttime tire checks, dim garages, or roadside emergencies. 2.SMART COLOR-CODED ZONES: Green (safe), Yellow (caution), Red (replace)—instant visual feedback without needing to interpret tiny numbers.This intuitive design makes our tire tread gauge ideal for drivers who want fast, reliable results 3.EASY TO USE: First, place the tread depth gauge’s flat black edge across both sides of the tire tread; second, depress the color bar until it reaches the full depth of the tread groove; finally, record the depth measurement indicated on the indicator bar. 4.COMPACT & PORTABLE:Pocket-sized design of tire tread gauge with a pocket clip enables easy portability, making it convenient to stow in toolboxes or keep in vehicles—ideal for average households to check tire safety and assess tire lifespan. 5.WIDE APPACTION: The tire thread depth gauge measures 0–32/32 (0–25.4mm), suitable for passenger cars, SUVs, trucks, motorcycles, and various vehicles. 6.DUAL-PACK VALUE: Includes two tire tread depth gauges 32nds—keep one in your glovebox and one in your toolbox for backup or share with family and friends. 6.Note: To activate the glow function, first place the scale bar in a lit area (natural or artificial light) to allow it to absorb light; only after sufficient light absorption will it emit fluorescence in dark conditions. ASIN B0FKFM17KT Brand Name GODESON Unit Count 2 Count Item Weight 9.07 g Part Number 88702Y-2 Manufacturer GODESON Thread Style 1/32 Inch Material Type Plastic Item Dimensions 2.84 x 0.83 x 0.36 inches Number of Items 2 Included Components 2 pcs tire tread depth gauges Warranty Description 1 Year Manufacturer