Robot Arm Kit for DIY Mechanical Arm Industrial Robotic Arm w/20KG Digital Serv

20KG Digital Servo - Size limit: upper arm 121mm/4.8"; middle arm 111mm/4.4"; forearm 61mm/2.4". - 1 x Set of Robot Arm. - Output shaft: 25T. - Output shaft hole: M3. - Body shell: aluminum alloy + plastic.

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