SODIAL(R) 100Pcs Mixed Color Pigeon Leg plastic Foot Rings Band Inner Diameter 8mm High 6mm Easy to remove and re-use,They can be opened wider Use for identifying similar looking birds with easy Use them to keep different breeds apart, mark suspected cockerels, separating hatches The rings split in half on a small hinge making them easier to put on the leg,Suitable for various poultry, birds, hens, ducks, etc