Omega® Case Back Gasket ("Sans Fil" polyurethane), inside diameter 19.76 mm, outside diameter 21.00 mm, see all case numbers in description Longines® threaded waterproof crowns Screw Chuck Screwdriver Blades Replaceable

Screw Chuck Screwdriver Blades Replaceable blades held firmly in the handle by means of screw chucks

click spring and rivet combination for a Ansonia medium sized movement

using a 364 battery with hand dimensions 120/70/20 (hour/minute/sweep second)

Tap (mm) Thread Size of Stem: 1

Rolex® 161

Omega® Case Back Gasket ("Sans Fil" polyurethane), inside diameter 19.76 mm, outside diameter 21.00 mm, see all case numbers in description Longines® threaded waterproof crowns Screw Chuck Screwdriver Blades ReplaceableOmega Case Back Gasket ("Sans Fil" polyurethane), inside diameter 19. 76 mm, outside diameter 21. 00 mm, see all case numbers in description Case Back Gasket Round "Sans Fil" polyurethane, inside diameter 19. 76 mm, outside diameter 21. 00 mm, height 0. 80 mm, to fit Omega case numbers: 5950010, 5950023, 5950025, 5960031, 5960038, 5960043, 5960044, 5960049, 5960055, 5960064, 596747, 5961080, 5980005, 5980006, 7950807, 7950814, 7950816, 7960826,