DIY Robot Hand Mechanical Arm Robotic Claw Set Acrylic+Screw pack+Servos

Features: 4 degree of freedom robot arm with more untrammeled and flexible experience. All movement joints are made of fine quality bearings with high precision. Full 4-axis moving to do extra extension and support for 180-degree robot servo. Need DIY assembly to improve hands-on ability and brain skills. Discounted at only: US$ 29.96