Quality Materials: Our bird deterrent pigeon spikes are mainly made of stainless steel, which is durable and not easy to break or rust. The bird deterrent pigeon spikes will not corrode even if exposed to extreme weather conditions, and the base is made of plastic with a certain degree of flexibility, can be firmly attached to the bird spike. Package Contents: Contains 4 bird deterrent pigeon spikes, each device comes with 10 anti-climbing spikes and a base. The length of the base is 25 cm, and the bird spikes are 11 cm long. These stainless steel spikes are well positioned to prevent birds from landing. Easy to install: The installation time of these stainless steel pigeon spikes only takes you a few minutes, just insert the spikes into the base. You can anchor the bird spikes where birds are perching, nesting and pooping with a zip tie, screws, double-sided tape, construction adhesive, etc. Effective and safe design: The dense bird spikes extend 11 cm in a fan shape so that birds