Durable Construction: This cutting auxiliary ruler is made from high-quality aluminum alloy, featuring a structure and a thickness of 3.9mm. This makes it sturdy and resistant to deformation, do not like ordinary steel rulers that are approximately 1mm thick. Antislip Design: The cutting ruler is equipped with a 15mm widened anti-slip bar, ensuring that it doesn't slide during cutting or marking. Precision Cutting: With this craft safety ruler, you no longer have to worry about making line or wasting precious photos or drawings. It ensures precise and accurate measurements for all your DIY leather crafting needs. Versatile Use: This ruler is not only perfect for leather crafting but also ideal for various applications such as drawing, cutting, and other DIY projects. Value for Money: Given its strong construction and versatile use, this aluminum alloy ruler offers excellent value for money, making it a must-have tool for DIY enthusiasts and professionals alike. Specification: Material:Aluminum Alloy Size Chart: as described Package Includes: 1 Cutting Ruler Note: Please allow slightly errors due to manual measurement and different monitors.