1. Product type: Bird spikes 2. Material: PP, stainless steel 3. Dimensions: - Bird spike length: about 30 cm/11.8 inches - Width: about 2.1 cm/0.8 inches - Height: about 10 cm/3.9 inches - Spike width: about 8 cm/3.1 inches (dimensions after assembly) 4. Total weight: 386 - 479 grams/13.6 - 16.9 ounces 5. Package list: - 10 x Bird spikes for deterring birds - 150 x Iron spikes - Due to manual measurement, errors are allowed. 6. Bird - proof spikes: Stainless - steel bird spikes can not only prevent birds and other animals from landing and perching, but also prevent them from causing serious damage. 7. Avoid damage: Stainless - steel pigeon spikes can serve as a visual and physical deterrent, preventing animals from entering a specific covered area to avoid damage. 8. 15 - foot coverage: A 15 - foot coverage area can effectively prevent different animals from landing on window sills, fences, ceilings, patios, or anywhere they might land. 9. Sturdy and durable: Bird - proof nails can also prevent thieves and other intruders from climbing your fence. They are sturdy and durable, not easily damaged, and suitable for any climate. 10. Easy to install: Bird - proof nails have pre - drilled holes at the bottom for quick installation and can be easily fixed with a glue gun (on concrete or brick walls) or wood screws.