These are 8" 3D Aluminum metal Wind Spinner for your yard, garden or even indoors. They are made of thick aluminum material, making them resistant to the impact of climate changes and external environmental factors. I create these with a similar design on each side so you get double the enjoyment as it spins in the wind. When you receive your spinner you just spread the sides out in opposite directions so the wind can catch it and spin it. Each one also comes with it's own 360 degree spinning hook. If there is severe wind and/or weather I would suggest bringing it in, like you would a wind chime.