This friction spring is designed to fit various Rolex Caliber models (635, 640, 645, 720, 730, 740, 745, 765 and 775). This high-quality, imitation part is sold individually for easy replacement and improved functionality.
- 645-5607 - For Barrel Spring
- 645-5673 - For Axle Spring
***Time Connection II Inc. 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 Time Connection II Inc.***


