three way chandelier

I make this personal 3-way chandelier using E27 lamp adapter (https://www.amazon.it/FOCCTS-Adattatore-Convertitore-Portalampada-Impermeabile/dp/B07H9NZZ5M/ref=sr_1_6?__mk_it_IT=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=1S1CE6U8QG8WF&keywords=portalampada+e27&qid=1574546312&sprefix=portalampad%2Caps%2C202&sr=8-6)
and a son-off for Google Home compatibility.

I use m2 allen screw for close the cap.