MKM Decorating Disks is a set of two 4 inch (10 cm) sturdy flexible transparent sheets. They are designed to allow the user to easily and quickly divide space, such as making a 5 sided plate out of a round thrown plate, putting four evenly spaced handles near the top of a large jar, or making sure a round bowl is squared accurately. Use the concentric circles to quickly center your piece. Colored radial lines indicate even devisions (2, 4, 6, 8, 10, 12) on one decorating disk and odd divisions (3, 5, 7, 9) on the other disk. The secret is the many holes!  The holes at the intersections of all the radial lines and all the concentric circles allow you to mark directly through the decorating disk to the surface below.