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This is a set of two precision tools – Bergeon 6918 and Bergeon 6919 – made in Switzerland, designed specifically for the Etachron regulating system found on many ETA calibers. The 6918 is used for turning the hairspring stud to centre the balance spring, while the 6919 is the correct tool to safely press out and reinsert the Etachron stud from its holder. Both tools feature hardened stainless steel tips and ergonomic synthetic handles, allowing delicate manipulation without damaging the hairspring. This product is brand new and genuine, in original packaging.
Brand：Bergeon (Swiss)
Models：6918 / 6919 (set)
Origin：Made in Switzerland
Quality：Genuine original, brand new in original packaging
Type：Turning and removing studs tool (2-piece set)
Compatible System：Etachron regulating system (common on ETA calibers)
Tip Material：Hardened stainless steel
Handle Material：Synthetic (ergonomic design)
Application：Turning hairspring stud to centre spring / pressing out and reinserting stud
1. Is this tool set an original Bergeon genuine part?
Yes. It is manufactured by Bergeon in Switzerland, brand new in original packaging, not a third-party copy.
2. Which movements is this set suitable for?
Suitable for movements equipped with the Etachron regulating system, commonly found on ETA 2824, 2892, and 7750 series.
3. What are the specific uses of the 6918 and 6919?
The 6918 is for turning the hairspring stud to centre the spring; the 6919 is for safely pressing out and reinserting the stud without damaging the hairspring.
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