Got a set of six 2700K bulbs. Arrived on time. I only needed 4, but figured having 2 backups would be good for the future. Three are easy to install and fit snugly to the ceiling. 1 lantern had no spring attached at all. It was at the bottom of the box. Looking the other side I was able to tighten with needle nose pliers but it wasn't that tight. Pen holders are generally not that strong. Therefore, when placed in the ceiling, one side did not tighten tightly. As a result I had to use 1 of the backups. It also had a blank page. Not good. So I used box number 6, both of whose springs were balanced and tensioned. So I have 2 reversing lights that work but the clamps are not tight on either side. Cannot be installed because one side does not seal. I'll try to tighten them somehow so they pull up evenly to the ceiling when I need to replace the ones that are already there. I believe another reviewer mentioned the same issue with springs. Hope can be improved for future sales of this product.
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