Larzuk (Diablo 2)

And the archon Board. You do not want in empty to spend quests

cryptic axe 5 holes
great poleaxe 6 holes
archon plate 4 holes

Not holes and holes. Holes in your nose.
(C) teacher, Mikhailov S. V.

CamoGoHka
If a thing is not superior, you can try hole punching cube, but it's a gamble, because it will make a random number of sockets between 1 to the maximum possible.

PS If you do the cube socket ETH armor will get a bonus boost to the defense.