Backyard feed -8x Anti-Crow Chicken Collar Prevent Chicken Screaming For Chicken Goose Highlights generic brand 8x Anti-Crow Chicken Collar Prevent Chicken Screaming For Chicken Goose Description : Made of nylon material, safe and durable for chicken duck goose to wear. Suitable for chicken, goose and poultry. Can effectively prevent the rooster from crowing disturbing the rest of neighbors. Size1: about 18x2cm/7.08x0.79inch Size2: about 20.5x2cm/8.07x0.79inch Package includes: 8pcs Chicken Collar Note: Since the above size is measured by hand , the size of the item you received may be slightly different from the above size. Meanwhile, please be reminded that due to lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item.