Upgrade Steel Gear: Our GOUP RC 7KG steering mini servo is suitable for micro RC cars. The inside gears is made of full steel metal, which is more durable and high effective than other plastic/copper ones. Widely Use: This mircro digital servo can be widely used for robots, mechanical arms, 1/14 1/16 RC Truck Car, remote control boat, remote control aircraf etc accessories upgrades. Excellent Performance: Upgraded Medium-aluminum Servo for rugged durability. Adopt precision gear combination (responsive, smooth and delicate), faster corresponding speed, better output torque. Product Include: 7KG micro servo*1, 25T servo horn*1. Customer Service: Welcome to purchase our GOUP RC product. If you have any question or problems, please come to contact us first, we will provide you satisfied service. Item Weight 2.4 ounces Manufacturer GOUPRC Product Dimensions 1.2 x 0.7 x 0.29 inches Manufacturer recommended age 14 years and up