This article is a bulb for lamps with R7s holder. This should surprise no hope, who has come this far. The packaging is quite impractical (you can cut only the lamps by means of a stable scissors gradually out of the package, which sucks a bit), the lamp itself served its purpose. Personally positive I found that here the lumen number is even printed prominently on the packaging. I naturally can not say anything about the durability. A star deduction there with me for the higher than average price.