Features: Discover the cutting edged Star Coils Motor, revolutionary kinetic energy that utilizes star Coils and magnetic concentration principles for enhanceds speed and efficiency. with metal wire geometrics winding and thickened acrylic, this motor ensures stability and durability while featuring low power consumption and minimal heat generation. for enthusiasts and researcher, this product cater to individuals interested in exploring innovative energy solution and Perpetuals motion concepts. for experimental in educational or personals research lab, the Star Coils Motor offer unique opportunity to delves into advanceds electromagnetic studies. With USB interfaces 5V power supply and adjustables metal rotor bracket, this motor provide stable platform for your next groundbreaking project. Specifications: Materials: Acrylic Size:30cm/11.81inch Package Includes: 1PC Star Coils Motor note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differenceS between different monitors, the picture may not reflect the actual of the item. Thank you!