Description:COMPACT: The Pigeon Foot Rings are approx. 8mm/0.31" in inner diameter, 11mm/0.43" in height. (Warm note: Before placing an order, please check whether the size of the product is suitable for your birds.)SUFFICIENT QUANTITY: The package includes 100 pieces birds foot bands, can help to keep different breeds apart, make your bird easy to be found in the bird flock.EASY TO USE: Reusable, easy to put on and remove, simple rings design makes it easy to buckle up and remove from your poultry.HIGH QUALITY: The bird leg rings are made of quality Plastic, easy to use, durable, not easy to break.WIDE APPLICATION: Suitable for various poultry, birds, hens, ducks, pigeons, cockatiels, parakeets, parrots, and other birds.Specification:Material: PlasticSize Chart:Inner Diameter: 8mm/0.31inchHeight: 11mm/0.43inchPackage Includes:100 Pieces Pigeon Leg RingsNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping!