sub-assembly of bumper
| name | quantity |
| espresso_frame_fabrication_parts/move_push_bumper_a | 1 |
| name | quantity |
| espresso_frame_fabrication_parts/move_push_bumper_b | 3 |
| espresso_frame_fabrication_parts/move_push_bumper_a | 1 |
| name | quantity |
| m3_screw/pan_25 | 3 |
| m3_screw/nut_2 | 3 |
