I used 2 of the 4 lamps supplied. I used them to replace some of the lightbulbs in the sconces above the bathroom mirrors. They screwed in easily and shone just as brightly as the other bulbs. Being very picky about cleanliness and tidiness, the lack of these bulbs bothered me, but the bulbs were so expensive at Home Depot that I decided to make do with the tech. The bathroom still had enough light without a burned out bulb replace, but for the price of 4 packs, basically less than the price of a single bulb at Home Depot, I thought what the heck. Now I don't get annoyed every time I turn on the light in the bathroom. Not sure about durability as I replaced the bulbs a few weeks ago. If they blow through in less than a year I will come back here to revise my review, otherwise 5 stars from me.
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