| Number | Reference materials | Thickness (mm) |
| 1 | GBW07123 | 1.20 |
| 2 | GBW07309 | 1.18 |
| 3 | GBW07405 | 1.24 |
| 4 | GBW | 1.16 |
| 5 | GBW | 1.18 |
| 6 | GBW07408 | 1.26 |