Features Thread Checker Set: Featuring 14 imperial and 12 metric thread checkers, this set covers the majority of nuts and bolts encountered in daily life, providing versatility for various applications Quick Identification: Simply screw the nut or bolt onto the thread gauge, and within seconds, you will obtain the correct size. This rapid size identification enhances your efficiency and workflow Compact Design: Unlike traditional wall mounted thread gauge, each of our nut and bolt gauge allows for pitch measurement in narrow or enclosed areas, boosting efficiency, flexibility, and convenience Metal Material: Made from 10B21 carbon steel, these nut and bolt thread checkers boast high hardness, erosion resisting, and a long service life, ensuring long lasting performance and reliability Versatile Solution: Offering 26 nut and bolt size gauges, this set serves as a practical solution for plumbers, handymen, repairmen, auto repairmen and machinists, catering to a wide range of needs Specification: Item Type: Thread Checker Gauge Material: 10B21 Carbon Steel Specifications: 12 Metric: M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75 14 Imperial: 6-32, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20 How to Use: Take out the product for direct use Package List: 26 x Thread Gauge 1 x Storage Box Package List 26 x Thread Gauge 1 x Storage Box