Features: QUALITY CONSTRUCTION: Made from sturdy stainless steel, this bolt gauge card is resistant to rust and corrosion, ensuring long-lasting use and precision in measurement. ACCURATE THREAD MEASUREMENT: Easily measure the length, pitch, and diameter of screws and other fasteners with this highly precise gauge card, ideal for DIY, automotive, and industrial applications. EASY TO READ MARKINGS: Features clearly engraved, easy-to-read markings for fast and accurate identification of screw sizes, helping to save time on the job or in the workshop. COMPACT AND PORTABLE DESIGN: The compact size of the bolt gauge card allows for easy storage in a toolbox or pocket, providing convenient, on-the-go measurements whenever needed. VERSATILE USE: Ideal for use with various bolt types and sizes, this gauge card is great for mechanics, engineers, contractors, and anyone needing to measure thread specifications for precise assembly or repair tasks. Notice: Actual color may be slightly different from the image due to different lighting effects. Please allow 1-3 cm deviation due to manual measurement. Description Material: Stainless Steel Package List: 1/2/3 pcs Stainless Steel Double Sided Bolt Gauge Card