Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: does it fit the ultra stinger ?
Document: This kit seems to be a quality piece. Installation was quick and easy. The light is a lot brighter but you lose the ability to focus. I use it at work daily and don't miss focusing as much as I thought. I read in other reviews that the kit makes the stinger longer. It made the light just long enough that it wouldn't fit in the holster. Still a great kit and pleased with this purchase.
The upgrade kit fit right on and it works really bright , may be 3 times much brighter than the original one.
good product, good price fast delivery exactly what I expected. would purchase from this seller again. installed them right away and it fit perfectly. the light is much brighter than the old bulb that's for sure.
Excellent fit perfect with no problems. High quality super super bright. I have another streamlight flashlight with C4 bulb. When I compare the to. I see no different in brightness. The only thing is you only have on or off. No high med low functions.
Made my old stinger pretty much new again! Highly recommend!
This a great addition to my Stinger flashlight. Super bright and a great price. If you have a Stinger, this is the way to go.
i love this aftermarket attachment for my stinger flashlight. i use it for work and theres no such thing as a dark corner with this thing
This is a great upgrade to the Stinger. Makes the light much brighter and lasts much longer. Definitely a neat upgrade.
Its a great product. Preforms very well. Would recommend this product .very easy to install led in ths stinger flashlight
Item didn't work for my stream light stinger xt. Item said it should and provided instructions that didn't apply to my flash light.
Answer: yes