For sale is ONE Kinetic Wind Sculpture Dual Helix Spinner. The entire wind sculpture including the pole and its fixture is made of pure copper with brass hardware. The only metal is the stainless steel ball bearings that are completely covered by brass hardware. Two ball bearings separately located at the top and bottom of the spinner make the entire structure move with a slightest breeze. The pole is made of heavy gauge copper and secured into the ground by an all copper 4-point anchoring system. With its heavy duty construction, this kinetic sculpture can withstand strong winds. The wind catchers and arms are not coated and will age naturally. If you want to preserve its original copper shine, you may spray a layer of clear coat on it. We have had great success with clear coats made by Rust-Oleum and Permalac (Peacock Labs). The craftsmanship on this wind sculpture is impeccable. It is finely balanced and maintenance free. The sculpture is entirely weather proof and made to last for decades. We proudly back this beautiful kinetic wind sculpture with lifetime warranty. Size: The entire sculpture (above ground portion) is about 7 1/2 ft tall. The spinner head is 22″ x 42″.