Material: Made of weather-resistant plastic, UV and weather resistant. Very durable and environmentally friendly, will not rust or crack like metal, and will not deform under strong light. Easy to install: can be installed with nails, screws or adhesives or 2D Velcro ties or cable ties (not included in delivery). These anti-bird nails can be attached to any plane and can be used for a long time. Size: 45cm/4.5cm/3.5cm (length/width/height), color is gray. You can tie it to the desired length based on the breakpoint. Can effectively protect birds from damage. Effective protection against birds: 10 plastic plates are included in the box. Additionally, the birds' nails replaced barbed wire and broken glass, which gave the intruder some physical memory function and is not expected to cause serious physical harm to the animal. Application: Can be used to prevent birds, cats and pigeons from entering your home or garden. You can avoid animal noise without having to worry about cleaning up animal feces. Ideal for outdoor or semi-open areas such as balconies, window sills, walls, fences and even roofs. Note: The data are all manual measurements, please allow a 1-3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received.