Features: Made from high-quality alloy, sturdy and durable. Safe to Use: It won’t harm to the legs of the birds. Practical: It prevents the birds from flying away and effectively helps the birds' training. 9 sizes for your choice, suitable for a variety of species of birdssuch as Cockatiel, Chattering Lory, Gold Macaw, etc. Specification: Material: Alloy Color: Silver Rings Size:4/ 5 / 6 / 7 / 8 / 9 / 10 / 12 / 15 (optional) Rings Fittting: Approx. 6#: Cockatiel, Maroon-bellied Conure, Double-eyed Fig Parrot 7#: Sun-Conure,Jenday Conure,Monk Parakeet, Eastern Rosella 8#: Red-masked Conure, Chattering Lory, Red-bellied Parrot, Black-headed Caique 9#: Dusky Pionus, Maximilian's Pionus, Blue-headed Pionus,Bronze-winged Pionus 10#: Derbyan Parakeet, Mitred Conure,Alexandrine Parakeet 12#: African Grey Parrot, Great-billed Parrot 15#: Blue & Gold Macaw, Umbrella Cockatoo Note: 1. Size information is just for reference only, please allow 1-2cm (0.4-0.8") differences due to manual measurement. 2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Package List: 1 * Parrot Leg Ring