Package includes: the set consists of 12 bird nails, 1 adhesive tape, 24 cable ties for fixing. Keep birds away from your home, garden, balcony or other surfaces. Bird protection: such a bird thorn has a deterrent. The spikes are easy to see and harmless are carefully designed and effective. Guide the animals without hurting them and can effectively prevent the penetration of pests, birds and climbing animals. Easy installation: depending on the place of use using the double-sided adhesive tape or cable ties (both included). The ends can be connected to each other. Long lasting: durable, rustproof. It only needs to be installed once and can be used for a long time. The service life is more than 10 years. are your strong pigeon and sparrow repellent. Wide application: bird nails suitable for different positions can be installed windows, beams, roofs, fireplaces, balconies and other surfaces etc. to keep birds away from your home, garden or yard.