Check the listing for details. 2-Blade Vertical Axis Wind Turbine Generator Power Turbine w/Controller 12V. Color: White and Blue, Condition: New. Listed at 198.60 USD. Specification Material: Iron, Aluminum Alloy, All Copper Color: White and Blue Process: Spray-plastic Treatment Model: NE-500W Blade Numbers: 2 Flange: DN25 Rated Battery Voltage: 12V/24V IP Protection Level: IP67 Wheel Diameter: 0.4m/1.31ft Maximum power: 100 W Rated Voltage: 12V Rated Wind Speed: 13m/42.65ft/ s Control System: Electromagnetism Assembly Required: Yes Noise: Less Than 62dB Product Size(L*H): 40*71cm/15.75*27.95in Flange Connection Size: φ14/0.55in, φ85/3.35in, φ115/4.53in Number of Connection(Smallest) Holes: 4 Flange Thickness: Min14mm/0.55in Pylon to Flange Distance: Min20mm/0.79in Adaptable Pole Size Range: φ56-φ62 mm/φ2.22-φ2.44in Package Size: 80.8*33*21cm/31.81*12.99*8.27in Net Weight: 9kg/19.84lbs Gross Weight: 10kg/22.05lbs.Specification Material: Iron, Aluminum Alloy, All Copper Color: White and Blue Process: Spray-plastic Treatment Model: NE-500W Blade Numbers: 2 Flange: DN25 Rated Battery Voltage: 12V/24V IP Protection Level: IP67 Wheel Diameter: 0.4m/1.31ft Maximum power: 100 W Rated Voltage: 12V Rated Wind Speed: 13m/42.65ft/ s Control System: Electromagnetism Assembly Required: Yes Noise: Less Than 62dB Product Size(L*H): 40*71cm/15.75*27.95in Flange Connection Size: φ14/0.55in, φ85/3.35in, φ115/4.53in Number of Connection(Smallest) Holes: 4 Flange Thickness: Min14mm/0.55in Pylon to Flange Distance: Min20mm/0.79in Adaptable Pole Size Range: φ56-φ62 mm/φ2.22-φ2.44in Package Size: 80.8*33*21cm/31.81*12.99*8.27in Net Weight: 9kg/19.84lbs Gross Weight: 10kg/22.05lbs.