

Rolex® calls this imitation made to fit part a double spring. It has four arms and has an outside diameter of 5.9mm. The factory part number is a 5607 and it fits 9 different calibers. Sold individually.
***Esslinger & Co. is independent of and not affiliated with or sponsored by Rolex® Watch U.S.A. Inc. Rolex® warranty does not apply to non-genuine parts supplied by Esslinger & Co***