BIRD REPELLENT SPIRAL REFLECTORS: Our visual reflective ornamental spinner uses wind motion and light reflections to keep birds away coming from any angle. HUMANITARIAN SOLUTIONS: The Silver Mylar Spiral Reflectors is made of safe, non-toxic plastic material that will not harm the environment and animals. Instead of frightening and harming birds, our bird repellent deterrent device humanely scares them away by reflecting visual light. EASY TO INSTALL: No assembly required. Each of them comes with a durable nylon lanyard that can resist strong winds. Easily hang these bird blinder repellent spinner on your area with direct sunlight and breeze for effective use. WIDELY USE: The bird-reflecting spinner is both practical and decorative. It can be used in farmland to protect rice and vegetables, or hung on fruit trees or vine, widely Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.