The wavy quilt ruler is made of 3 mm thick acrylic, which is not easy to be damaged and rusted compared with other products. This wave ruler will add quick curves to any traditional or paper block The tip of the simple curve tool is blunt and does not create a circle. When they are together, they will form a curved strip. No more wasting time and resources! They are suitable for all kinds of and can also be cleaned as needed. Name: wavy template ruler Colour:As Shown Material:Acrylic Size:8 Inch Package Contents: 1 x Wavy Template Ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.