This is 100 mm Big Four-Leaf Micro Wind Generator DC Motor with Propeller and LED. Note: The color of propeller and LED may change. Specifications and Features: It is a micromotor wind turbine generator. Ideal for teaching demo. Motor outer diameter: 24mm Motor shaft diameter: 2mm Motor length: 32mm Rated RPM: 200~6000rpm DC Power Range: 0.1V-18V Package Includes: 1 x Micro Wind Turbine Generator DC Power 0.1V-18V 200~6000rpm Motor 1 x Plastic Propellor 2 x LED Category: Miscellaneous Accessories