I bought two bulbs, sad my bulbs when I put them in my three way bulb they blew out straight away, one bulb works and the other doesn't, the bulbs came with another purchase from Revain which came in a big box and i just weighed the bulb it would be stupid to put that big box in and send it back so i don't know what to do so i'm just saying it doesn't work what it does but the other thing works fine, i don't know if it was a bad bulb or not, but i'm the eldest who needs the light