This is a set of 15 clear 500cc bottles with ventilation filters, suitable for raising larvae. They have been used 2-3 times. They are used items. They have been washed, but there are some bite marks from the larvae. Some relatively clean bottles are also included. I've packed as many as I could fit in the cardboard box, so I'm not considering selling them individually. If you have any questions, please let me know in the comments. Thank you. - Quantity: 15 - Material: Plastic - Purpose: Larvae rearing container - Lid Features: With ventilation filter - Size: 500cc