Xiaoxiao Store 100Pcs Set Numbered Poultry Leg Bands Little Bird Pigeon Parrot Chicks Duck Parakeet Leg Rings Clip 10.5mm Diameter Material: Plastic, durable for re-use Type: Clip on, easy to remove Inner diameter: 10.5 mm/ Outer diameter: 12.5 mm 100 pieces numbered leg rings for keeping different breeds apart, mark suspected cockerels, separating hatches For the diameter limit, it is only suitable for chicks, parakeet, quail and other baby poult with slim legs