Having had yet another bulb fail recently I had no stock left and purchased these to use with E27 adapters. Their weight is somewhat lighter than the previously used ones. This could mean the quality is lower but doesn’t have to. It does mean the weight is better than some LED bulbs and means they are more suitable for a weaker ceiling mounted light.
Brightness was as good as previous bulbs purchased with also a slightly lower profile. Screwing into an adapter was easy and fitted perfectly in the light fitting.
I’m quite happy to recommend partly as the value is hard to beat, brightness and whiteness of the light is as good as others.