This is for a compatible bar and two screws that are used for the newer style Seamaster links that have screws in the side. If you have lost the bar and screws that secure your links to the rest of your strap then this is an ideal replacement. Please make sure the link nearest your clasp is 20mm wide before you order this.
 
This was not made by omega but it is a compatible, high quality, UK made part designed specifically to fit the following watch models.

Fit bracelets with clasps stamped 1515/816, 1616/749 and 1617/751 and many others

Or Bracelets with part number 020STZ010100, 020STZ011960, 020STZ012056, 020STZ014312,

020Z018929, 020DBZ010102, 020DBZ012272, 020DYZ010101 and 020DYZ012271

Seamaster Diver 300m 212.30.41.20.01.003, 212.30.41.20.01.005, 212.30.41.20.07.006, 212.30.41.20.03.001

Seamaster Diver 300m Chrono 212.30.42.50.01.001, 212.30.42.50.03.001, 212.30.44.50.01.001, 212.30.44.50.01.002, 212.30.44.50.03.001

Seamaster Diver 300m Co-Axial GMT Chrono 212.30.44.52.01.001, 212.30.44.52.03.001, 212.30.41.20.04.001

Seamaster Rio 2016 522.30.41.20.01.001

Seamaster Diver 300M Co-Axial Master Chronometer 210.30.42.20.04.001, 210.30.42.20.06.001, 210.30.42.20.01.001, 210.30.42.20.03.001

Seamaster Diver 300M Co-Axial Master Chronometer 41.5mm Chronograph 212.30.42.50.01.001, 212.30.42.50.03.001

Seamaster Diver 300M Co-Axial Master Chronometer 44mm Chronograph 212.30.44.50.01.002, 212.30.44.50.03.001, 212.30.44.50.01.001, 210.30.44.51.03.001, 210.30.44.51.06.001, 210.30.44.51.01.001

Seamaster Diver 300M Co-Axial Master Chronometer GMT Chronograph 212.30.44.52.01.001, 212.30.44.52.03.001

Seamaster Diver 300M Co-Axial Master Chronometer Olympic Games Collection RIO 2016 522.30.41.20.01.001

SeamasterDiver 300M 42 mm, titanium ‑ tantalum 210.60.42.20.99.001

Omega Seamaster Diver 300m Steel and Gold 210.20.42.20.01.001

I have given you photos of your watch screws and bar from every angle. Please use them to add to this description.

If you are not sure if this will fit your watch or if you have any other questions then message me. I'm here to help you.