Copper collet clamping the tungsten electrode in the collet body used in liquid and air cooled TIG torches. Complies with international standards, fits TG Binzel and Trafimet welding handles.
| Product | Diameter | Catalog No. |
| 13N21 | 1,0mm | SR.401 |
| 13N21M | 1,2mm | SR.402 |
| 13N22 | 1,6mm | SR.403 |
| 13N22M | 2,0mm | SR.404 |
| 13N23 | 2,4mm | SR.405 |
| 13N24 | 3,2mm | SR.406 |