Environmental protection: when the windmill spins in the breeze, the windmill will stun the birds by reflecting strong light, emit a metallic sound, causing the birds to worry about not adapting to their environment and fly away. Harmless to birds and the environment. Dimensions: The reflective windmill measures 55 x 24 cm and can be placed in various places such as the garden, orchard, vegetable patch, farm. Product assembly instructions can be found on the last page of the product image. High quality materials: the bird deterrent windmill is made of silver glitter polyester, which is non-toxic, durable, anti - UV, weatherproof and can be used for a long time. Easy Installation: Easily install this bird stop wheel in sunny and windy areas for efficient use. Application: suitable for all birds. The Bird Repellent Windmill is printed with thousands of tiny twinkling lights that scare birds away with bright flashes. Note: Data is manual measurement, please allow some variation. 1-29cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.