Features:100% brand new and high quality.Rugged and easy to use, your good assistant for work and life.Easy to use, good performance, long lifeWith complete specifications and numerous quantities, it is perfectly qualified for the needs of work and life.Vacuum quenching, plus titanium plating treatment, longer life, brighter outer surfacePrecise non-slip tail, adjustable opening, do whatever you want, work more efficiently.The telescopic inner diameter gauge is a spring piston that expands and contracts in the hole (or groove). It can be used with a micrometer or a caliper, and it has a knurled locking device.Specifications:Color: as shownSize: as shownQuantity: 4pcsMaterial: carbon steelMethod: For the measurement of small holes, slits and grooves, use a micrometer or caliper with a knurled locking device.Package contains:4x telescopic adjustable hole measuring gauge1* storage bagNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.