About This BIRD DETERRENTION: The wind-powered reflective spinning deterrent device produces flashes of light through reflective cups, causing visual disturbance and Keep birds, achieving a bird away effect.bird deterrents for outside MULTIPURPOSE: Perfect for a variety of scenarios such as railings, gardens, porches, roofs, patios, decks and boats. Effectively prevents pigeons, sparrows and woodpeckers from approaching, nesting or roosting EASY TO INSTALL: 1.18" x 1.18" magnet embedded in the bottom (Note, please use in winds below force 4), which can be adsorbed on metal surfaces. Use the included screws to mount the reinforcement will be more durable GOOD DURABILITY: Reflective devices to keep birds away is designed with electroplated reflective finish. More durable and suitable for a wide range of weather, ensuring that birds are effectively deterred from landing over the long term QUALITY SERVICE: If you have any questions about the reflective wind-powered spinning devices, please contact us in time, we will give you the most satisfactory answer Overview Brand : Flerigh Color : Silver - Standard Material : Acrylic Item Weight : 0.56 Kilograms Number of Pieces : 1 Is Electric : Yes Unit Count : 1.0 Count