1pcs KS3518 Digital Servo High Torque Mechanical Arm Hand RC Metal Servo Motor for Robot Arm Boat CarSpecifications:Product weight: 60gProduct size: 40x40.5x20mmProduct speed: 0.16sec/60deg; 6.6VMlocking Diameter: 20kg/cmMaterial: MetalColor: As Shown in the Picture Working Voltage: 4.8-6.6v No-load Current: 80-100mA Product Line Length: 300mm Control System: Change Pulse Width Working Frequency: 50-330Hz Operation Angle: 135 deg; (at 10002000usec) approx. 135Neutral position: 1500 usecImpulse signal imaginary position: 3 usecDirection of rotation: counterclockwise (at 1000-2000usec)Pulse width range: 500 - 2500usecCurrent 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 a little different from the real thing. The measurement error is +/- 1-3cm.