Bergeon 31409 Black Aluminum Tool for Winding Watch Crowns (2.5mm - 10.0mm)

This Bergeon 31409 Black Aluminum Tool is a universal and lightweight tool, ideal for winding wristwatches after repair. Made of anodized aluminum with a soft elastomer insert, it provides excellent grip to the crown and can adapt to different crown shapes. With an opening diameter of 2.5-10.0mm and a weight of 35g, this tool is a must-have for any watch repair expert.