It serves to gently capture the queen from the hive and mark it. Marking and picking marker tube is easy to operate and thanks to its plastic construction there is no risk of damaging the queen itself. Place the raised marker on the honeycomb and gently push and push the plunger to make the queen go inside. Next, move the marker tube and press the queen onto a net through which we can simply mark it with a color or number. The marker tube itself is made of foam, so we do not have to worry about harming the queen. Withdrawing the marker tube then we allow the queen and in the hive we can allow the marker tube to allow the queen through the opening to get out.