Some items don't need reviews but if you need a manual tread depth gauge this is the right place for you. Color coded for wear indicator, measures tread depth on everything including, you guessed it, tires! To tell you I was so thrilled with this product that I texted Santa asking for a lifetime supply would be an exaggeration, but wow, talking about stockings. Small, light, easy to read and easy to slide in its glory. Guaranteed to last a lifetime or two minutes after you give it to others, including employees. So if you want to give someone hope this Christmas, just pack one of them in an extra large TV box and let the fun times continue with family or friends. Enjoy this magical gift for a lifetime.