I bought these to replace the halogen bulb in a desktop fiber optic Christmas tree. I will say this is definitely an excellent lamp (6000K) for white clarity and fiber optic color fidelity. The lamp generates a minimal amount of heat (which has to be touched directly on the lens to feel it) compared to a halogen lamp which can spontaneously ignite wood after a short run time. Brightness is another plus! It's slightly brighter than the halogen it was replaced with. This way the fibers are much better illuminated and make the tree even more beautiful! This lamp is a few mm taller than the lamp it replaced but this did not affect the installation very much. I also bought another brand of MR11 LED bulbs, it was brighter than the other brand. I would definitely prefer this option if you need extra light.