1.Low start up speed, 6 blades ,high wind energy utilization 2.Easy installation, tube or flange connection optional Blades using new art of precision injection molding,matched with optimized aerodynamic shape and structure,which enhance the wind energy utilization and annual output. Body of casting aluminum alloy, with 2 bearings swivel , making it survive stronger wind and run more safely Patented permanent magnet ac generator with special stator,effectively reduce torque,well match the wind wheel and generator, and ensure the performance of whole system., Weight: 22.0462262 pounds, Manufacturer: NL