Quantity   Component name
1 × 3D Printer At least 80mm X/Y length
2 × M5 x 100 mm Bolts
2 × M5 Nuts
2 × Ball Bearing 16mm Outer Dia, 8 mm bore hole, ceramic preferred
1 × 8mm Dia Steel Rod This will be the axle
6 × M3 x 8 mm steel hex socket button screws These will hold a few of the pieces together