The Bergeon 16918-TETC ETACHRON Regulator Adjusting Screwdriver Tool is a precise instrument designed for turning ETACHRON pitons and finely adjusting the spiral centering between racket pins. With a Bergeon 16918-TETC Screwdriver and its specialized blade, you can easily and accurately fine-tune your watch's regulating system for optimal performance.

Replaced the Bergeon 31081-TETC