1 pc. High Torque Mechanical Metal RC Arm KS3518 for Car Boat Robot ArmSpecifications:Product Weight: 60gProduct Size: 40x40.5x20mmProduct Speed: 0.16sec/60deg; 6.6V Locking Torque: 20kg/cm Material: Metal Color: As Shown Working Voltage: 4.8-6.6v No-Load Current: 80-100mALproduct Line Length: 300mm Control System: Change Pulse Width Working Frequency: 50-330Hz Acting Angle: 135 deg; (at 10002000usec) approx. 135Neutral position: 1500 usecImaginary position of pulse signal: 3 usecDirection of rotation: counterclockwise (at 1000-2000usec)Pulse width range: 500 - 2500usecActuating angle: 360 deg; Package Content: 1 x Servo Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.