Specification: Adopting high quality material, which is durable, non-toxic and without deformation for long term use. Comes 100pcs in one bag, each ring has a number mark, which will help to keep different breeds apart, mark suspected chicken and separating hatches. Simple clip design makes it easy to apply and remove. It is reusable, this will be help to reduce breeding expenses. Can be used in poultry operations management or breeding. Type: Poultry Leg Rings Material: Plastic Number: 001-100 Inner Diameter: 1.6cm/0.63" (Approx.) Outer Diameter: 1.8cm/0.71" (Approx.) Height: 0.8cm/0.31" (Approx.) Note: The quantity of this product is about 100, there may be a little error, please understand. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 100 x Poultry Leg Rings