HeroNeo&reg; 100X 8mm Hen Pigeon Leg Poultry Dove Bird Chicks Parrot Clip Rings Band 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 Inner Diameter: 8 mm / 0.31" (Approx.) Quantity: 100 Pcs, Height: 6 mm / 0.24