When I bought light bulbs at a huge discount, I did not know that these are not just standard bulbs that we can put in a regular household socket, and you get to know different types of light bulbs , such as GU10, which definitely do not fit into a standard household socket! After some searching I found this adapter kit that allows you to use GU10 bulbs in a standard G26 fitting that you find in most US homes. The adapters are solidly built, there are no rough edges anywhere and the GU10 bulbs plug in, screw in and work fantastic. We've gone from worrying about a ton of lightbulbs we just can't use to having a set of 10 adapters that we can start using them with! Given how many bulbs we bought in this acquisition, we will most likely be selling a second and possibly a third set of these adapters! GU10 bulbs are definitely a different kind of light, but they can find their place. in your house! If you don't place them in a closed fixture, they create a spot lighting. What great potential for unique selling propositions! By turning what might have been a wasted investment into an amazing find, they really made a difference and completely bailed us out of our predicament!