Strong, plastic entrance disks in many colors to help your bees find their way home. Bees can identify their hive by the color of the box, color of the entrance disk, or pattern on the box. These disks can be used as an entrance on nucs or top entrance boxes, or just screwed to the side of the box as a way to help the bees find their way home. Disk has 4 functions: Open, Closed, Closed with Ventilation, and Queen / Drone Excluder. Made with a UV inhibiter, these will last years, but not a lifetime. We do offer galvanized ones that will last a lifetime which can be painted.