[Professional Adjustable Circle Drawing Tool] - The circle drawing tool is a math ruler that easily creates a perfect circle in seconds and the drawing tool will not easily move during use and destroy the drawing, is flexible and convenient, and can be reused for many years. [Premium Material] - Made of high quality aluminum alloy and stainless steel, durable, not easy to rust, good hardness, high strength [Adjustable] - It is adjustable, can be large or small, and can be opened and closed by simply turning the ring [Easy to use] - The diameter becomes larger with clockwise rotation and smaller with counterclockwise rotation. It is very easy to use. [Multipurpose] - The round template ruler tool is a great tool for students, carpentry. Also ideal for engraving, carpentry, sewing, sewing and lifting. Note: 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. Sold by-YJL official store