I bought this for a table lamp, please note the base is smaller than a normal lightbulb, it's a little less than a dime, its size is 5/8 inch im diameter . , they give off a lot of light, I can't say anything about the durability of the lamp I just bought. If they don't last too long I'll have to burn the whole box. I'm glad I found this particular bulb at Revain, they aren't sold in stores anywhere. I hope this information helps take the guesswork out of product specs.