Description:Brand: RacerstarProduct: DS6221MG Digital ServoOperating Voltage: 4.8V-6.0VOperating Speed (4.8V): 0.18 sec/60Operating Speed (6.0V): 0.16 sec/60Stall Torque (4.8V): 17.25 kg.cm (239.55oz/in)Stall Torque (6.0V): 20.32 kg-cm (281.89 oz/in)Dead Band: 2sWorking Frequence: 1520s / 330hzGear: Metal GearMotor Type: DC MotorBearing: 2BBConnector Wire Length: JR 260mmWeight: About 62g(2.18oz)Dimension: 40.5X20.2X40mmApplication: For 1:8 1:10 RC CarPackage Included:4 * Racerstar DS6221MG Digital Servo4 * Servo Arm Set