Really not heat resistant, devaluation, presumably toxic

Version is a perfect fit. Works. I use them with LEDs. Even here the version begins strongly to smell and we quite warm when the light time is 10min to. Once again, I would probably not buy the version. Anyone wanting to use normal bulbs should leave it alone.

Addendum of 01 May 2015: Stay away from the socket. The stench is unbearable now and smell outside of the socket. Seems to be the bare poison. Extreme it is well under normal light bulbs. Have the socket touched before 30 minutes because Relamping and my fingers still stink. Version that comes to waste.