| Bill Of Materials | Qty | Unit | Notes |
| ball holder | 4 | ea | |
| labor assembly/fabrication (min) | 5 | min | |
| labor machining (min) | 5 | min | |
| multi-ply wood sheet | 80 | sq in | |
| neoprene foam sheet 125 | 80 | sq in | |
| RV pump drip pan | 1 | ea | |
| tennis ball | 4 | ea | |
| roughing pump vibration isolator | 1 | ea |
| Used on | Qty |
| vacuum system, rotary vane | 1 |