This Magic Disk (R) is a great stress reliever to have during a busy day at the office! Measuring 4" x 5/8", this custom disk puzzle can be manipulated into a myriad if interesting shapes. There are multiple surfaces for you to place your four color process imprint. Lifetime guaranteed. This supplier is QCA certified. U.S. patent ZL01 2 70827.5. Invest in this unique form of advertisement for promoting your business or upcoming event!. No special pricing, promotional programs or less than minimum available for this item.