Number of Items:3 EASY TO FIND THE QUEEN- The grid design has slots that are large enough for worker bees to pass through easily,<br> but small enough to keep drones (male bees) and the queen from passing through.<br> Keep the queen in the brood nest makes it very easy to find her without having to look through honey boxes for her.<br> 10 FRAME OPTION - Purchase the correct queen excluder to fit your hive.