Rite Farm Products poly quail and chick safety waterer base. Safety base has a narrow 1/2-inch open watering ring to prevent drowning and to be more suitable for smaller breeds, such as quail. Waterer base features a strong poly design. Accepts our 1-quart poly mason jar or any glass regular mouth quart or pint mason jar as shown in photos. Jars not included base only. Snug fitting to create a nice lasting seal but is a bit snug the first few times of use so push and turn with some force to attach to jar until broke in.