The border (looks like a tower) is molded into shapes formed from different levels that increase in size, allowing you to wrap quilling strips around the shape and size, making open triangles, circles, or squares evenly for paper art projects.SpecificationColor: PurpleMaterial: Plastic1 Step Round Dimension: 80 x 33mm (L*W)10 Steps Triangle Dimension: 110 x 30mm (L*W)11 Steps Square Dimension: 110 x 30mm (L*W)11 Steps Circle Dimension: 110 x 30mm (L*W)Packing List: 4 x Quilling Borders (1pc per shape)AdvantageMade of sturdy plastic with smooth surfaces, 4 shapes are available: Circle, Triangle, Square, and Round. They are durable, easy to use, and not easy to deform.InstructionUsing the circle border and different sizes to make five round paper coils.