When you are keeping bees, you will have to take the bees out of the hives a lot of times for extraction of honey, cleaning of hives, and many other processes. Therefore, these are something common you see in the supplies of many beekeepers.
These corner escapes have holes in them that allow the bees to exit the hives but do not let them return. The holes are placed on top of the escape board to let the bees escape easily. Combination of the escape board and corner escapes can be an excellent and convenient thing for your beekeeping processes.
They can be a great and helpful addition to your beekeeping supplies. Thus, you should get them.