Difficult dispense equitable recession, I have the bulb already for another lamp, but with a different base. From this pear I'm thrilled. This GU10 bulb however, it is so that the socket is too short and I do not get the bulb into the socket. It is absolutely incomprehensible to me 1. not it explicitly indicate when it departs from a standard norm and 2. to sell the product at all if it does not fit into the current holders, despite identical type designation. The diameter fits however. And it not the case that there is a mm but the dimensions of the base are seriously different (much shorter). Must be returned unfortunately.