6 DoF ARM Robot Chassis metal frame (excluding RC Servo motor) is made of color-plated aluminum alloy including all mechanical details: joints, bearings, screws, aluminum mounting brackets ,... so you can completely assemble the 6 degrees of freedom (6 DoF) ARM Robot manipulator as shown below, note that the frame does not include the motor.
Note: RC Servo motors must be set to 90o before installing it in the frame.