eMylo Beekeeping Queen Excluder Trapping Grid Tool Equipment pack of 10 pcs drone in split part of the bee nest and prevent the bee in the hive from flying It is based on the fact that bees are smaller than queen bee, or drone, and for the passage of bees needed gap is smaller than the queen bee or drones sold way: 1 pcs curved tip and 1 pcs straight tip Size: 14x4 cm(LxW) eMylo(TM) is our registered trademark, pls don't follow-sell,othersise you will be held liable.