Usage Tips:Our Portable Precise Thread Size Checker Is Crafted From High-Quality, Corrosion-Resistant Materials, Ensuring Long-Lasting Performance Even In Hostile Environments. Measuring The Bolt Dimensions Has Never Been This Reliable! With Clear Size Markings, This Bolt Size Finder Allows Both Professionals And Diy Enthusiasts To Easily And Accurately Identify Thread Sizes. Say Goodbye To Measurement Errors And Hello To Precision! This Versatile Thread Size Checker Offers Both Metric And Imperial Unit Readings, Giving You The Flexibility You Need For Any Project. It'S The Ultimate Tool For Anyone Looking To Measure What Truly Matters! Designed For Quick And Precise Measurements, This Portable Thread Size Checker Easily Fits Into Your Toolkit Or Pocket. Take It To Any Job Site Or Project Without The Hassle-Measure It And Move On! Never Lose Your Tools Again! With A Handy Keychain Ring, This Bolt Gauge Can Be Attached To Your Keys Or Belt, Ensuring It'S Always Within Reach. The Perfect Utility Locator At Your Fingertips! Colour:silver Material:Metal Package Contents: 1 * bolt size finder 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.