I now have 6 halogen spots replaced by these LED spotlights. After 3 days !!! are 2/6 only on approximately 20% light output and 1/6 equals failed. 3/6 go now after a whole week yet. Madness quality. Probably the same in 10-pack, so you can say, not all are flawed, it will have been a stand, so that the customer does not sit completely in the dark.