Hi @oldturkey03 and thank you for your answer. Actually it is Apple part number ***923-02215*** and they are out of stock from almost anywhere I checked. I’ve already checked with M2.5 and M3 but no luck. M2.5 was too small and M3 too big. They must be something like 2.7 or 2.8mm. Also the length is a problem because the standard 4mm and 6mm are not compatible also. I’ve read somewhere that the length is 5.4mm. So the only option is to buy from Apple but how is this going to work since there is no Apple store in Greece and no-one in official Apple forums responds.