Acrylic Arm Robot Claw Kit 4DOF Toys Mechanical Grab Manipulator DIY Servo SG90 MG90S Arduino Uno R3 - Multi-A D

1. 4 degrees of freedom manipulator with a more free and flexible experience 
2. All sports joints use high quality bearings with good precision 
3. Full 4-axis movement for additional expansion and support for 180 degree robot servo
4. Package includes: a: screws + assembled accessories 1 x set of screws, 4pcs x set of assembled accessories b: robot arm kit ( plastic: sg90 ) without board 1 x set of screws, 4pcs x set of assembled accessories, 4 x sg90 servo c: robot arm kit ( metal: sg90 ) without board 1 x set of screws, 4pcs x set of assembled accessories, 4 x mg90 servo d: robot arm kit ( plastic: sg90 ) 1 x set of screws, 4pcs x set of assembled accessories, 4 x sg90 servo, 1 x potentiometer control board kit ( set ), 1x uno r3 board e: robot arm kit ( metal: sg90 ) 1 x set of screws, 4pcs x set of assembled accessories, 4 x mg90 servo , 1 x potentiometer control board kit ( set ), 1 x uno r3 board