DIGOU 10xPcs Mini SG90 Micro Servo Motor 9g RC Robot Helicopter Airplane Boat Controls Operating speed: 0.12second/ 60degree ( 4.8V no load) Stall Torque (4.8V): 17.5oz /in (1kg/cm) Operating voltage: 3.0V~7.2V Pack of 10 servos Temperature range: -30 to +60