Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Will this work on a 4-D Mag Light? Thanks!
Document: I've had these bulbs in a 4 D-Cell MAGLITE before and they work great. All said is correct, better light, longer battery life, you just can't beat these bulbs. I loaded 4 images to the product image gallery to describe the only problem I've had and that is most likely more the flashlight that the bulb. I had to go to a 2 D-Cell flashlight and the bulbs separated 2 & 3 D-Cell from 4 to 6D-Cell so I order this bulb to be sure.
I  installed this bulb in my 3 D Cell Mag-Light. Turned the murkey yellow light to a bright light w/ the same batteries. I noticed while standing in a checkout lane at Meijers that a 4 pack of D cell batteries are $3.99. If this bulb last 3 times as long on batteries, I should be saving and seeing better. Very easy to install. I was so impressed I now ordered one for my 2 cell Mag-Light.
This is a great conversion replacement for my 3 D-cell mag light. It is bright and stands up to shock and my abuse of dropping and knocking it around while I work on may projects.
This light is made to replace the light in older incandescent Maglites and the 1st generation LED Maglites. It makes the light brighter than even the standard LED that came with the 1st generation C & D lights. Be careful though, because this will not work as a replacement in some of the newer Mag-Lites that take C & D batteries because it is a different size. This is mainly an upgrade for the incandescent lights and the 1st generation lights. I figured that part needed repeating.
I've been using the same bulb in my work light so long now that I can't remember how old it is. Before making the switch to the LED I'd go through 3 or 4 bulbs a year.
Didn't have high hopes for this upgrade for my D-cell powered maglites but I'm pleasantly surprise how they fit and the light they give off... Thanks to Amazon and Tool Deals for a great job of shipping on time delivery. Been well worth the price! I'll update when or if they burn out.
I thought the 2-D was a great little light until i popped in the new TerraLUX wow. If this bulb fits in your light, youll be satisfied im sure. Worth the money. If you want twice the "throw" of light, you can pay more than twice as much. This is my tool light, and around the house power-outage light. So it easily lights up complete rooms when I turn it on. Almost overkill. Just like GUYS like it.Thanks
Fits my older 3-D-cell Mag-lite perfectly. Evidently, newer ones have a different type of bulb socket and so, won't work.The beam is not only significantly brighter, it will focus much tighter. Excellent replacement for your Mag-lite.There is no reason in the world this thing can't be made in the USA. It is made in China, minus 1 Star!
Hello worldThis is led upgrade for maglite. Bought three of these and all work just fine. Really worth the price.Thought picture of TerraLUX TLE-6EXB is wrong in amazon.com when i write this. That picture is for models 4-6. Not 2-3.
this and one out of 4 lights i purchased was a dud, is my only gripes. The LED for the d-cell maglite flickered on, then off never to work again. BUT Amazon, and their awesome customer service saw to it that i did NOT pay return shipping AND they sent out another replacement even BEFORE i sent in the broken / damaged part. Now that's trusting the customer. No real complaints other than the lack of brightness compared to the minimag.
Answer: yes