Description: 【Sturdy Material】: Crafted from thickened metal plates, these Bird House Hole Protectors are weather resistant and sturdy, ensuring long term protection in various outdoor environments 【Effective Predators Protection】: The Bird Nest Entrance Guards can effectively protect your feathered friends by blocking squirrels, cats, wasps, and large birds, etc 【Aesthetic Design】: Compact design of Birdhouse Guards is great for accommodating birds while preventing larger birds and predators from entering the nest 【Easy Installation】: Bird House Guards Metal are designed with pre drilled screw holes for quick setup in just a few steps; suitable for most wooden birdhouses or Diy shelters 【Package Includes】: Each package includes four Protection Plates and sixteen Screws, with dimensions of 5.08 cmx5.08 cm/2.00 inchx2.00 inch, blending seamlessly with surroundings Specification: Material: Metal Size Chart:5.08 cmx5.08 cm/2.00 inchx2.00 inch Inner Hole Diameter: 2.5 cm/0.98 inch Package Includes: 4 Bird House Guards 16 Screws Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.