stanwood wind sculpture kinetic copper dual spinner - dancing octopus stanwood wind sculpture for sale is one kinetic copper wind sculpture with a theme of dancing octopus. the tentacles are positioned so the dual spinners will always spin in opposite directions with winds. 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 make the two tentacle-mounted wheels move independently and opposite from each other. 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 up to 70 mph. the copper tentacles 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 kinetic sculpture is impeccable. the wheels are finely balanced and maintenance free. the sculpture is entirely weather proof and made to last for decades. we proudly back this beautiful wind sculpture with lifetime warranty. size: the sculpture is 6 ft tall. each spinning unit is 10 inches tall and 15 inches in diameter.