Mini Wind Turbine Generator Model for Teaching Physical Power Generation Principle and DIY Science Education Experiment brand new and high quality Material: Electrical components Color: See pictures Leaf Paddle Dia.: 60mm Motor Dia.: 25mm Motor Length: 31mm Shaft Dia.r: 2mm Power Voltage: 0-20V Voltage: 6-9V Speed: 200~6000rpm Features: 12V Micro wind turbines. The motor can be done ordinary power motor, you can also plug blades in wind driven generator motor do retail package Quantity: 1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!