PORTABLE AND ERGONOMIC DESIGN: Compact 20x20.5cm size fits comfortably in your hand with smooth corners and clear markings. Ideal for field inspections, auto repairs, home workshops, and equally indispensable for professionals and lovers alike Quick Size Identification: Features a mounting design for quick nut measurement that does not require complex operations. Ideal for time-sensitive repairs and greatly improves the workflow efficiency of your mechanical and maintenance tasks STRONG ALUMINUM CONSTRUCTION: This tool is made of aluminum alloy for superior durability and lightweight portability. Resistant to rust and corrosion, outperforms traditional steel gauges in mobile work environments Precise size verification: Precise machining ensures that each hole maintains strict dimensional accuracy Measurement errors are eliminated and provide consistent data for manufacturing and repair engineers and technicians PRECISE NUT MEASUREMENT: This 34 hole nut checker provides accurate metric size verification of various nuts. Its general design helps professionals and hobbyists quickly identify and pair installation problems due to nut specifications and improper size settings, Manufacturer: sheQImaoYI