Features Durable Materials: This round drawing tool is made of premium aluminum alloy and 304 stainless steel material, odorless and safe, sturdy and durable, not easy to corrode, rust, deform or damage. 2 Drawing Tools: You will receive a aluminum alloy circular template and a carving knife, and the diameter of the template is about 12.5cm, that isk 4.92in, small and portable, easy to carry and store. Adjustable Design: The circumference of the adjustable circular drawing tool can be enlarged or reduced, and its aperture mechanism can be opened and closed by rotating the ring, which can be used for drawing circular measurements. Simple Operation: You only need to place the circular circle making tool where you need it, adjust the size of the center circle by rotating the golden edge to meet your needs, and then use a pen to draw along the circle, which is easy to apply. The Using Tips: When installing for the first time, the screws can be adjusted to the appropriate tightness without the need for subsequent adjustments. The product should be stored in a dry place. Specification: Item Type: Circle Drawing Maker Product Material: Aluminum Alloy, 304 Stainless Steel Product Features: Made of premium aluminum alloy and 304 stainless steel material, odorless and safe, sturdy and durable, resistant to corrosion, rust, deformation or damage.  Package List: 1 x Circle Drawing Maker 1 x Carving Knife Package List 1 x Circle Drawing Maker 1 x Carving Knife