• 4 degrees of freedom robot arm with more untrammeled and flexible experience.
• Each joint of the mechanical arm is driven by a sg90 servo.
• Ideal robot arm DIY assembly kit for college students, middle school students, DIY enthusiasts, etc.
• Adopt wood material, with light weight.
• Package include 1 set of wood cutting parts, 1 pack of screws and 4 sg90 servo, great for you to assemble.