That is an original Omega Seamaster steel watch band part link that is18mm huge and that comes whole with a aftermarket made pin and screws. Please make sure that your links have screws of their aspects and are 18mm huge before you purchase this as there’s a 20mm huge model of this link this is not going to have compatibility. This part link is used to increase your band a small quantity -about 5mm- to verify your watch suits your wrist completely. I’ve given you pictures to turn you your Omega link from each and every attitude. Please use them so as to add to this description. If you happen to don’t seem to be certain if this may increasingly suit your watch or you’ve gotten every other questions then message me. I am right here that can assist you.