A 510 connector from Germany? Why not? What the American and English engineers can do, the Germans can of course also do.
A replica was of course out of the question. Rather, in many places it was successfully optimized and newly developed. This has led to significant improvements, particularly in the areas of "Volt Drop" and "seat firmness".
The reduction of the volt drop is essentially achieved by two measures. On the one hand, the entire plus pole is gold-plated. This includes the tube in the center core as well as the nut to which the (copper / silver) sheet metal is attached. On the other hand the nut is flattened on one side. This means that the sheet metal no longer lies on just one point, but has an area of 5.3 x 4mm.
The nut is held in place by means of an Allen grub screw. This makes it beqeum adjustable in height. The grub screw is located opposite the flattened side. When attracted, the flattened side, i.e. exactly where the main current flow takes place, pulls firmly against the gold-plated tube. Another advantage against the Volt-Drop.
The thread of the 510 and the nut are designed as left-hand thread. This makes the installation in the mod a little bit more difficult. On the other hand, there is no danger of accidentally loosening the connector during use.
The connector is available in silver and black. The black colour was applied by PVD coating. It has a hardness greater than 2000HV, so nothing will scratch here. Furthermore the coating is electrically conductive. Between the nut and the top cap the coating was intentionally smudged to allow an even better current flow.
A silicone ring is incorporated in the center core. This is not absolutely necessary and serves more for double security.
The entire center core is pressed into the 510. So here, too, nothing can be solved in the long run.