Made of borosilicate glass, with straight bore
And safety screw with retaining device
| article- no. | leg Ø | NS joint | opening | price per pc. |
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models with massive glass plug |
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 | HDU1 |  |
| 8 mm | NS 12,5 | 1,5 mm | 15,00 € |
 | HDU2 |  |
| 9 mm | NS 14,5 | 2,5 mm | 16,00 € |
 | HDU3 |  |
| 10 mm | NS 18,8 | 4 mm | 17,90 € |
models with PTFE plug |
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 | HDU4 |  |
| 8 mm | NS 12,5 | 1,5 mm | 17,90 € |
 | HDU5 |  |
| 9 mm | NS 14,5 | 2,5 mm | 20,90 € |
 | HDU6 |  |
| 10 mm | NS 18,8 | 4,0 mm | 24,90 € |