This is an ant feeding area. You can place food to let them hunt, and also set up a water source. The lid of the feeding area has a wire mesh vent to reduce mold growth on the food and feeding area. There is a connector at the connection hole, so the tube is stable. It's easy to observe and raise ants, making it ideal for children's science projects. The color of the lid's vent and the connection hole may differ from the photos. The green parts of all products are now all changed to white. We sincerely apologize for the change due to the unavailability of the color. Size: 7cm x 13.5cm x 9.8cm Connection hole: For 8mm tube (inner 6mm) If you wish to purchase multiple items or combine them with other products from our store, we will create a separate listing, so please feel free to contact us. Each item is made by us, so please allow 2-5 days for preparation.