2 New Crown Winding Tools. This is a new set of 2 Bergeon Swiss crown winding tools for all Rolex watches. Grips tight on all crowns so you can set the date and time quickly without making your fingers sore. The plungers open and close the jaws. Strong spring action holds the crown firmly while winding. These are Swiss made. You receive: One winding tool with a 3 to 5 mm (1/8" to 3/16") opening. One winding tool with a 5 to 7 mm (3/16" to 5/16") opening.