Terralux TLE-6ex does not install

November, 2016 original review
Misleading product description. The Maglite retaining ring from your MagLite has an opening that needs to be larger than the top of this replacement LED bulb. That part of the bulb is 0.4285 inch. I recommend removing the retaining ring from your existing MagLite bulb and make sure that it is large enough e.g. about 7/16 inch. The attached images might be a little technical, but hope that these help you avoid wasting close to $20.
December, 2016 udpate
I bought a new retaining ring and this bulb now fits into my Maglite. The light has a dark square in the center of the light. This bulb is ok, but not ideal for a Maglite.

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