Features: Brand new and high quality Miniature 130 small motor: Low noise, four-wheel drive. Electronic experiment manual creation: Copper provide more stable power output and reduces energy loss. Low noise: Low noise, quiet operation and low power consumption, saving electricity and energy. 99% pure copper conductor: Strong conductivity and more durability. Pure copper contact have strong conductivity: The contact connecting the pin have a metal coating on the surfaces and strong conductivity. The voltages is 3V: The rotating speed is 15,000rpm, which can be used for fans, scientific experiments and so on Specifications: Material:ABS+Metal Size:Approx.37x20mm/1.45x0.78inch Package Includes: 1x 130 Motor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.