Features 1、Bee hive box entrance disk is used on a box where there is a round entrance hole. 2、Designed to adjust the size of the tap-hole in the hive and protect the beehive from the mouse attacks in autumn and winter. 3、Protect the beehive from the mouse attacks in autumn and winter. 4、Install it on the beehive to make it easy for bees to go in and out. 5、Rotating disc used for controlling access to the entrance of beehives. Features: Bee hive box entrance disk is used on a box where there is a round entrance hole. Designed to adjust the size of the tap-hole in the hive and protect the beehive from the mouse attacks in autumn and winter. Protect the beehive from the mouse attacks in autumn and winter. Install it on the beehive to make it easy for bees to go in and out. Rotating disc used for controlling access to the entrance of beehives. Four access options: fully open, queen exclusion, closed with ventilation and fully closed. Specification: Condition: 100% Brand New Color: White / Green / Yellow Material: Plastic Inlet disc diameter: 6.8 cm / 2.68 inch (appr.) The hole diameter: 2.4cm / 0.94 inch (appr.) Package Included: 4 x White Beehives Nest Door 4 x Green Beehives Nest Door 4 x Yellow Beehives Nest Door Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures. Package List