oversized links that people have had welded onto the end and even the professionally installed ones that come in the "package deals" are "add ons". The galvanizing won't be as good, the weld might not be as good and you can't count on the quality of the oversized links metal. You can't end for end your anchor chain when you might need to. It just doesn't seem like a good Idea when your anchoring system is such an important part of the ship. JMHO.