JX PS-5521MG 20KG Large Torque Metal Gear Standrd Analog Servo For RC RobotName: PS-5521MG Analog ServoWeight: 85gSize:40.5x40.3x20mmGear: MetalVoltage:4.8V-6VDead band: 7!#!amp!*!mu;s          1520!#!amp!*!mu;s \/ 50hzOperating Speed (4.8V): 0.18 sec\/60 Operating Speed (6V): 0.16 sec\/60 Stall Torque (4.8V): 17.25 kg.cm (239.55oz\/in)Stall Torque (6V):  20.32 kg-cm (281.89 oz\/in)Dimensions: 40.5X20.2X38mm \/1.59 X0.80X49 inWeight:  55.6 g (1.96oz)Connector Wire Length: JR  265 mm (10.43in)Bearing: 2BBPackage1x JX PS-5521MG Analog Servo