This is a Mares Pin 26.5, a spare part used in the assembly of Mares regulators. A technician keeps service pins like this on hand when overhauling a regulator, where a worn or missing pin has to be replaced with the correct factory part.

It is not a standalone scuba diving product. It is a genuine Mares spare for use during servicing by a qualified regulator technician, so your gear goes back together with the right components rather than substitutes.

If you are servicing Mares equipment and need this exact pin, our team can confirm it is the correct part for your model before you order.