Feature: 1. 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 2. 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 3. 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 4. 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 5. 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. Package List: 26 x Thread Gauge 1 x Storage Box