Quantity   Component name
1 × wiper motor,able to turn continuously one for each joint
100 × 6 mm airsoft balls Needed for the bearing part of the system.
3 × Metric 6 screws or Metric 6 threaded bar cut.(length of 80 mm)
3 × Metric 3 screws of 70 mm
3 × Metric 6 screws or Metric 6 threaded bar cut.(length of 100mm)
6 × Metric 6 nuts
3 × Metric 3 nut