Generic Mainspring to Fit Rolex Caliber 1220/1225. Part 1220-7635
Compatible for Case Caliber: ROLEX 1220, ROLEX 1225 and many more.
Factory No. 770/ROL 1220
Part Name: MAINSPRING 770/146
***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.***

