Specification: Material: steel Size:about 20cm/7.87in Package includes: 1*Square Wave Kinetic Spinner Features: 1,An Original Piece Of Kinetic Art:The perfect gift for people that have everything, Square Wave will leave a lasting impression. In a modern age of information overload and radiating stress, peaceful and calming statues such as Square Wave help us to reflect, think and process what surrounds us. 2,Durable Design:Square Wave is made of steel treated to be used both indoors and outdoors. You can hang it in your garden or patio.Admire as it unfurls and swirls in its standing position or hang it from the ceiling to make it a centerpiece in your house. 3,Square Wave's unique shape and movements are dictated by a formula found in nature that is naturally aesthetically pleasing to the human mind. This formula is known as the Fibonacci Sequence. This makes Square Wave a beautiful reflection of the natural world in your home and when looked at from the right angle can evoke images of a beautiful nautilus swimming in the depths or the petals of a complex flower. 4,Square Wave is extremely versatile, you will find that it fits in to nearly any environment with ease, but never goes unnoticed. It is the perfect accent to any room, coffee table or mantelpiece adding a touch of refinement and elegance to the space it finds itself in. 5,Quality ServiceTaking your satisfaction as the first priority, and guarantee to provide you with professional after-sales services. If you have any questions or concerns, please feel free to contact us.