As a practical and convenient tool, this ruler adopts clearly marks and many circles in different sizes design, which brings you more convenience for measuring templates and drafting circle projects. It can fully meet your daily needs. By the advantages of high durability, sturdy and smooth surface, this ruler has a longer lifespan than others on the market. And more, using it as a nice present for your children or classmates is an ideal choice. It is constructed of high-quality plastic material. The diameter of this product is 11.5cm. This product is perfectly suitable for home, household, dorm, school, etc. Item Name: Stationery Ruler Material: Plastic Features: Lightweight, Practical, Useful, Long Lasting Size Details: Diameter: 11.5cm/4.53" (Approx.) Notes: Due to the light and screen setting difference, the item"s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Stationery Ruler