Five AC standard Test Tubes™ for housing your newly captured queen ants caught during nuptial flight. These fit directly to our Hybrid Nests for easy transferring of your ant colony into their formicarium. They also fit directly into our other products including the AC Test Tube portals and AC Test Tube Adapters. These test tubes can also be used to provide your ant colony with water or sugar water. They are large (length 15 cm, diameter 1.7 cm), durable, made of plastic, and are safe to use.