Keep-O, the Toys for permanently extension. The Keep-O Buttplugs are another innovation from Organotoy. Their main purpose is to keep your back door as open as possible. Keep-O stands for Keep Open. The Keep-O´s are designed so that the strain diameter is as close as possible to the largest diameter (the diameter of the head), but still holds well (if it has a size close to your largest used toy). the undercut (the constriction) directly behind the head is slightly smaller. The long foot adapts to your bottom like a glove. maximum diameter of 3,19 inch/ 8,1cm shaft diameter of 2,8 inch/ 7,1cm total height is ca. 5,63 inch/ 14,3cm Please note: All of our products are custom-made to order. Please allow an average of 4 weeks for production before shipping. We appreciate your patience and understanding.