1.The hole of the queen exluder is small enough to exclude the queen and prevent queen from entering the honey boxes where worker bees collect honey to lay eggs and improve the efficiency of worker bees' honey collection
2.Alternate permutation and round edge not hurting bees wings
3.Esay to clean and corrosion proof
4.The Queen bee isolator can separate the queen bee from the worker bee, so that the queen bee and the worker bee can perform their daily tasks such as making honey, laying eggs and producing royal jelly in an orderly manner in the hive.