Key features

• •Excellent Craftsmanship - XINRINTONG thread checkers are made of 6061 aluminum alloy with durable and easy-to-read laser etched markings. All posts are made of durable SUS304 and machined with extreme precision, ensuring that every bolt and thread meets ANSI Class 2B pass and fail standards.
• •55 Nut & Bolt Sizer - Our bolt thread identifier instantly identifies 34 different sizes, including 16 metric thread sizes (from M3 x 0.5 to M16 x 2.0) and 20 imperial threads (from #6 - 32 coarse thread to 3/4 - 16 fine thread), and comes with 19 different drill gauges (6 metric gauges 4mm - 14mm and 13 imperial gauges 1/16" - 1/2") to help you measure drill bits quickly and easily.
• •Multi-Functional Design - 1: The bolt sizer has 6 pre-set mounting holes for easy mounting on a wall or tool box; 2: The nut bolt gauge is designed with scales on both sides, 15 cm and 6 inches (Laser Etching); 3: Four non-slip feet (Removable).
• •Efficient - Our Bolt Identification Board is an accurate and easy-to-use nut and bolt thread verifier. It can help you identify or organize messy screws and nuts in seconds. It is a powerful assistant for anyone who handles a large number of screws, nuts and bolts.
• •Widely Used Tool - This bolt and nut gauge is an indispensable tool for professionals and DIY enthusiasts. Its one-piece design ensures that all parts remain safe and organized on the tool, eliminating the worry of parts being misplaced or tangled. Whether you are an auto mechanic, carpenter, welder, plumber or workshop technician, this comprehensive set of bolt size and thread gauges will be your most reliable partner.