Excellent MaterialThe humane pigeon spikes are made of high quality 304 stainless steel, strong and rust-proof. Even if exposed to the scorching sun or heavy rain for a long time, they can maintain their original condition and have a long service life.Package Content After purchase, you will receive 4 bird repellent spikes. Each is 33cm long and the total length of the 4 is 132cm. Sufficient quantity and sufficient length can meet your daily needs.Maintenance-free and environmentally friendlyStainless steel bird spikes do not require any chemicals or electricity. What's better is that compared to other bird repellents, bird spikes are a safe and permanent physical barrier for birds without maintenance or care.Easy to InstallBird Spikes Birds for Pigeons Small Birds have pre-drilled holes on the base, and they are designed for quick and easy installation. These bird spikes can be fixed with screws, glue or cable ties.Multi-FunctionBird spikes are effective and humane, and can be a visual and physical deterrent. It not only prevents birds from landing and roosting without causing them serious harm, but also prevents thieves and other intruders from climbing on fences and houses.