Gear: Speed Reducer NMRV40 Ratio1:10 CPG
Kinghaw masking tape (yellow color)
Bolt: stud m10x1m (steel - s45c)
Shim brass: size 0.05 x 4 x 6
Cleaning: broom hard broom with coconut leaves
Terminal: lubricant 1/8 (german - external helix)