Bought these 4 packs and the bulbs arrived in their packaging and looked good. I go to replace the lightbulb only to find that there is a lot of play and that the lightbulb isn't quite tight compared to the one I replaced. I checked all 4 bulbs and compared them to the existing one and found that they were all 2mm shorter (actual length was 115.8875mm). So if you want a tight fit and connection (which you want with any circuit) I won't cut it. I can't rate any of their properties, but the fact that they don't meet the advertised specifications is a big problem and makes them unsuitable for my lamp.
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