Why Choose Godeson Dial Type Tire Thread Tread Depth Gauge? A professional tool worth having tire tread depth gauge, UNIVERSAL FIT CARS AND TRUCKS Tire tread depth gauge can protect your vehicle, Tire tread depth gauge can save your FUEL cost, Tire tread depth gauge can enhance your driving ability , Our gauge Feature 1. Accurately measures tread depth, Calibrated from 0 to 1 inch in 1/32 inch 2. Color coded tread depth gauge clearly indicates the tire different phase by colors 3. Red range on bar: 0-3/32 4. Yellow Range on bar: 3/32 - 6/32 5. Green Range on bar: 6/32-13/32 6. Comes with a pocket clip, easy to carry 7. Reads in 32nds Suitable for trucks, motorcycles automobiles and any passenger vehicles. 8. Zone 1 (Red) shows tire tread low and tire needed to be replaced 9. Zone 2 (Yellow) shows marginal tread remaining 10. Zone 3 (Green) shows tire has ample tread