This protective ring for birdhouses is an essential accessory for maintaining the integrity of your nesting boxes. Its metal construction prevents birds from chewing the entrance hole, allowing and secure environment for breeding. Suitable for a variety of bird species, it enhances the longevity of your birdhouses. Features - Color: Silver -Material:Aluminum - Size: 11.20X11.20X0.50cm/4.40X4.40X0.20in -High durability: crafted from stainless steel materials, these protective bird box guards rings are resistant to damage and can be reused multiple times, allowing longevity -Chewresistant design: the special antibite design effectively prevents parrots from chewing on the box, maintaining its structure -Versatile usage: ideal for use in parrot nesting houses, wooden box holes, or as bird nest accessories, catering to various needs -Safe and comfortable: these bird house ring guards allow a secure and comfortable breeding space for parrots, enhancing their overall wellbeing -Easy to install: quick and easy to install without the need for extra tools, making the setup process simple and efficient Package list: 25 x nest box anti-biting rings