1Stainless Steel: Made of stainless steel, the cork back metal rulers are resistant to bending or breaking, ensuring durability and withstanding frequent use. The smoothly edges provide a comfortable grip. 2Cork Backing: The cork backing provides a non slip and stable surfaces, preventing ink from smudging or dirtying the paper when using the ruler. 3Hanging Hole Design: Each ruler is equipped with a hanging hole, allowing for easy storage and keeping your desktop neat and organized without taking up additional space. 4Precise Measurements: The rulers are marked with precise inch and metric measurements, making it easy to read and convenient to use for accurate measurements. 5Versatile Use: The set includes rulers of 3 different sizes, suitable for students, artists, designers, engineers, and more. They can be used in offices, classrooms, schools, or at home, catering to a wide range of applications.