Although the adapter fits into my "Occhio Puro" wall lamp purely just barely, and shifts the light source (a 230V G9 LED) by the great length of the adapter a little bit further ahead than it would have liked ... but other than that I am very satisfied: The adapter does what he should, and represents the only way to operate with LEDs (there / voltage combination no LED bulbs are for this socket) a 230V B15d lamp.
Now I just need sometime a really good G9 LED lamp that also genuinely warm white 2700K delivers (and has a diameter of more reinpasst with me -. The only lt Amazon reviews really in 2700K bright LEDs have one for myself too large in diameter ).