One 16MM LINK FOR OYSTER BAND 40MM Rolex GMT / DATEJUST Watch Bracelet.
It has a brushed (centre polished) finish on top of the link with shiny on the side of the link and will fit your Oyster watch band.
This link will fit band which has 20mm/21MM lugs and takes 16mm link.
Link is 15.7-16mm wide and comes with one screw pin.