Good enough for a 'house party' as someone mentioned before me. In other words, it 'kinda' works but not really. The light beam isn't narrow/clean enough to do a good job on a mirror ball and the lamp mount is a bit on the flimsy side - it bends very easily. The lamp housing itself is solid though. Careful when taking off the mount as you're going to have a hard time getting the two wheel screws back into the housing.....! Would not buy again.