This is a compatible pin and two tubes that will fit Omega Seamaster Fullsize watch links. If the back of your end link (the part that connects your strap to your watch) has the number 825 on it or the last three didges of the code on your clasp is 825 then these will fit your watch. 

These were not made by Omega but are high quality compatible parts that are made in the UK and designed to specifically fit the stated watch models.

These will fit straps with a clasp stamped 1503/825, 1514/825 and others

For Omega watch models 213.30.42.40.01.001, 2225.80.00, 2227.80.00, 2498.20.00, 2498.80.00, 2598.20.00, 2598.80.00, 2598.86.00 and 2599.80.00, 2542.80 and similar.

I have given you photos of your pin and tubes 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.