Kashmir-Robotics 2212/920 KV brushless motors with pre-soldered 3.5mm bullet connectors -- just plug and play. Kashmir-Robotics motors are designed in the USA and assembled in China using high quality bearings, windings, and magnets for high efficiency, long life operations. These are the same motors used in Kashmir-Robotics wildlife protection quadcopters and hex copters. Please specify CW or CCW threaded motor hubs when you order, or order as pairs.