This Lego Mindstorms EV3 Technic Medium Servo Motor has been previously used and is ready for a new home. The motor is compatible with other Mindstorms EV3 sets and is designed for ages 8 and up. This item includes one piece and is made of plastic in a stylish gray color. Whether you're an adult looking to learn how to build or a seasoned Lego enthusiast, this item is perfect for you. With interests ranging from building to engineering, this Lego set is sure to provide endless hours of fun.