OSOYOO 10x SG90 Micro Servo Motor For RC Helicopter Airplane Car Boat Robot controls Toy 9g Application Fields: remote control helicopters, micro robot,arm,car and boats. All kind of R/C Toys and building small electronics with the raspberry pi or other arduino parts maximum 180 degree rotation Analog modulation Pack of 10 Pcs SG90 servos Includes nylon gear set