HIGH QUALITY -- The adjustable circle drawing tool made of aluminum alloy and stainless steel material, good corrosion resistance, not easy to rust. Craft quality, beyond your imagination.SIZE -- About 12.5cm/4.9in in diameter. It's perimeter can be enlarged or reduced. Circle stencil can be used to draw round measurements and so on. It is a completely redesigned tool for drawing and measuring perfect circles.BEST TOOLS -- Circle drawing maker tool is a great tool for students, carpentry. With this meter, you dont have to worry about the circle being drawn.IDEAL DRAWING TOOL -- Circle drawing tool is a math ruler that seamlessly creates a perfect circle in seconds. Adjustable circle drawing tool can be used as a 360 metrics for students and school students. Also ideal for engraving, carpentry, sewing, sewing and hoist design.WARM TIPS -- Due to the smooth edge of the blade, please pay attention to safety when using it, do not put your hands in it.