[Full-Width Coverage] The length of each group is 100mm (4in) and the width is 76mm (3in). Unlike products with only 2 or 3 T-shaped needles, our Ⅰ-shaped products are much denser. There are 6 needles in each group in horizontal and vertical direction for better 360° coverage. [Durability] The bird spikes and base are 100% made of high-quality 304 stainless steel, strong and durable. Compared with plastic bases, our bird spikes are much stronger and more durable, and require no maintenance for up to 15 years of use. They are resistant to all weather conditions and remain intact in the event of a snowstorm, without the risk of loosening and rusting. [Effectiveness and User-friendliness] The stainless steel bird spikes are a visual and physical deterrent to birds, and can prevent pigeons or other birds from nesting or releasing droppings in your home. The soft and flexible spikes do not stab animals but can effectively repel birds without harming them. A good solution to achieve the