[Efficient and Humane Bird Spikes] By imitating the structure of thorn plants, the stainless steel bird spikes prevent the birds from landing without harming the animals. At the same time, the bright surface can reflect the sunlight to frighten pigeons and other animals away. [Durable] Made of high-quality 304 stainless steel, strong and durable. Compared with plastic bases, our bird spikes are more durable and lasting, and require no maintenance even if they are used for up to 15 years. they can stand any weather and keep stay intact through blizzards and windstorms that will never loosen or rust. [Full Width Coverage] The length of each spike is 4 inches (100mm) and the width is 3 inches (76mm). Unlike products with only 2 or 3 spikes, our bird control spikes have a total of 6 needles in each group of needles in the horizontal and vertical directions, which can better cover the entire 360 range. [Wide Use] Pigeon spikes can be installed in any area, very suitable for standard 4-inch wide window sills, roofs, gutters, balconies, ledges, doorways or any areas contaminated by bird droppings to get rid of the mess and prevent birds nest. 1. Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding. 2. Colors may vary depending on the monitor, please understand. Attention: Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly