Main spring Winder replacement Barrel Kit uses a wooden case watch tool with 20 caliber sizes for repair maintenance

With 20 types of tools, corrosion resistant copper, and corrosive tools housed in a wooden storage box, the Mainspring Winder set guarantees accurate winding for most watch types Tool set includes reinforced handles and 20 winder adapters that are systemically organized for quick access during complex repair procedures Perfect for watchmakers, watch technicians, and meticulous watch enthusiasts who need a maintenance solution for luxury watches and watches Suitable for workshops, watch repair stations or home studios. Suitable performance for automatic movement, replacing the main spring, and restoring watch Designed for precision, this tool kit features ergonomic storage and a special winder head suitable for 20 different caliber for seamless spring installation