Feature: 1. The blade is built with copper sleeve inserts, which will not damage the nylon fiber when the bolt is tightened, making it difficult to deform or break. 2. Hub grooves and blades adopt compact designed, so that the blade and hub match more accurately. 3. Double groove ball bearings, thicker, when the machine is running, not easy to shake. 4. 3pcs of 580mm nylon fiber blades, strong wind, good power generation effect. 5. Adopts quality motor, high efficiency and low noise, durable for long time use. Specification: Item Type: Wind Generator Kit Model Model: NE-200S3 Rated Power: 200W Maximum Power: 220W Optional Rated Voltage: 12V, 24V Start Up Wind Speed: 2.0m / s Rated Wind Speed: 11.5m / s Survival Wind Speed: 55m / s Blades Quantity: 3pcs Blade Length: Approx. 580mm / 22.8in Installation Method: Hoop connection Blade Material: Nylon fiber Generator Type Generator: Three phase permanent magnet ac generator Brake Mode: Electromagnetic Electromagnet Speed Regulation: Automatically adjust windward Working Temperature: -40 ?? ?? 80 ??. Package List: 1 X Body 3 X Blade 1 X Fairing 1 Pack X Screw Set 1 X Spare Screws Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.