| G1/4 | |
| Art. | Ext. – Int. |
| 20/280 | 4.3mm – 3mm |
| 20/285 | 7.3mm – 5mm |
| 20/287 | 8.3mm – 6mm |
| 20/290 | 9.3mm – 7mm |
| 20/292 | 10.3mm – 8mm |
| 20/295 | 12.3mm – 8.3mm |
| G1/4 | |
| Art. | Ext. – Int. |
| 20/280 | 4.3mm – 3mm |
| 20/285 | 7.3mm – 5mm |
| 20/287 | 8.3mm – 6mm |
| 20/290 | 9.3mm – 7mm |
| 20/292 | 10.3mm – 8mm |
| 20/295 | 12.3mm – 8.3mm |
