The round entrance disk with a diameter of 80 mm is used to cover the eyes - openings in various devices for bees. The round entrance disk is most often used to cover the eyes in beehive extensions, small hives, fertilizers, etc. In the middle of the cap there is a screw hole with which the entrance disk is screwed onto the surface. By turning the entrance disk, it is then possible to set the following positions: ventilation, large opening, closing, opening impermeable to the mother, small opening. The entrance disk is made of 1 mm thick plastic and is available in four colors: white, blue, yellow, green.