Description: Quick And Accurate Measurement: Designed to quickly and accurately confirm thread size, this thread checker says goodbye to guesswork and saves time and effort on the job. Simply slide the knob with one hand, tighten and measure to quickly confirm part size. Keychain Attachment: This thread size checker comes with a keychain that makes it easy to hang on your keys or belt, ensuring that it's always within reach when you need it. Durable Construction: The thread measuring tool is made of high-quality stainless steel that can withstand heavy-duty use and harsh environments to ensure long-lasting performance. The length of this product is 9cm, the width is 3cm and the height is 1cm. Easy To Read Markings: Clearly engraved dimensional markings make it easy to identify thread sizes and reduce the risk of errors, making it a reliable tool for professionals and DIY enthusiasts. Item Name: Thread Checker Material: Stainless Steel Features: with Keychain, Metric Imperial Units, Sliding Knob Size Details: L: 9cm/3.54", W: 3cm/1.18", H: 1cm/0.39" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1/2/3 x Thread Checker