Portable Thread size detector: This thread size verification tool is designed for fast and accurate measurements. With its portable design, you can easily carry it to any job site or project Fast and accurate measurements: Say goodbye to guesswork and save time and effort with this thread size checker. The tool is designed to quickly verify thread dimensions by sliding the knob with one hand to quickly confirm workpiece dimensions. Get accurate measurements in seconds Multifunctional unit Reading design: Available in metric and imperial units, this thread checker offers versatility and convenience for measuring any project. Clear dimensioning marks facilitate identification of thread dimensions Rugged: Our measuring tools are made of high-quality materials that can withstand frequent use and harsh environments. You can rely on its robustness and performance for years to come Quick manual measuring tool: Portable thread size detection keychains are not limited to just one type of item. This thread checker has sliding knobs and easy-to-read markers to quickly measure bolt dimensions. It is a must-have tool for professionals and DIY enthusiasts, making dimensional checks easy to complete in seconds Colour:As Shown Material:Metal Package Contents: 3 x Portable Thread size detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.