The Kunray BY1020/MY1020D 48V 1800W Brushless DC Motor with Throttle is a high-performance electric motor designed for use in electric bicycles. With a sleek silver and black design, this motor is made of a combination of plastic and metal materials for durability and efficiency. The 1800W power output and 48V voltage ensure a smooth and powerful ride, making it ideal for cyclists looking to upgrade their bike for improved performance. The inclusion of a throttle in the set adds convenience and control to the overall riding experience.