Entrance reducer for 10-frame hive with two opening sizes - a 1 inch and 4 1/2 inch. This simple piece of equipment can keep those valuable package bees in place while they get established or help a weak hive defend against robbing - invaluable.
The standard of the industry for 100 years. Two entrance/exit sizes. Small for winter and large for summer. Hint: reduce the entrance size until your valuable package bees are established.