
I am very happy with these bulbs. We have a Costco patio string light and these bulbs are glass (not sure about the patio - we've already had to clean the glass of broken bulbs that accidentally fell off) and they use quite a bit of electricity too. These bulbs are plastic, use much less electricity and the light they put out is so similar to incandescent bulbs that I can't tell any difference. You will NOT regret these lamps. In addition, each of them worked perfectly right out of the box.