High AccuracyThis indicator measures in 1/10mm (0.1mm) increments. Easy to UseThe dial has a diameter of 44cm. Clear and precise reading makes it easy to use. No special experience or skills are required, the player is designed for everyone. The color code is easy to read. Portable with a storage bagWith a lightweight and compact design and a kangaroo bag, it is convenient to take it out. Save Time and MoneyNo more wasting time and money on expensive and complicated tread measurement devices. With our depth gauge, it only takes seconds to check the tire condition. Superb MaterialMade of stainless steel, this tread depth tool has a long service life . And the round dial with pointer design makes it easy to read. Specification Material: metal Dimensions: 6*5*2.3cm Measurement range: 0-11mm How to read the color code on the gauge dial Zone 1 (Red): Indicates that the tire tread is low/worn, which means it needs to be replaced Zone 2 (yellow): indicates the remaining marginal tread, which means the rubber will soon need to be replaced. Zone 3 (green ): indicates that the tire has a wide tread, which means it is safe to drive. Package List 1*slbrillre gauge measuring instrument 1 * bag