KOR F8T5/CW T5 LED Tube Light Bulbs, 12-Inch, 5W, 500 Lumens, 4-Pack

Bulbs put out a crisp white illumination. No more yellowish color like the ones I replaced. Come in a 4 pack and one bulb had a crack at the end. Took picture and called Amazon and said they would expedite a replacement. Replacement was here in a matter of days. Excellent customer service!

Great light bulbs. They work well. A+

Aweome direct replacements for the flickering flourescents easy to put in and no ballast bypass necessary at tall. Even considering our son is an electrician haha...... Worht the extra money.

Initially I assumed I'd bought the wrong size because these seemed too big for the fixture. But it was really just a matter of gently prying apart the grips at either end of the light and inserting this bulb. The light is bright and lovely, more like a daylight bulb or task lighting than the jaundice yellow you want in, say, a living room. I am excited to insert the other three bulbs that came in this package into our existing fixtures, but I'll wait till those bulbs burn out. I'll revise this review in the future to comment on the bulb's longevity.

Easy replacement for florescence bulbs. I did remove the ballast. The lamp still hums a little, but this is not the bulbs' fault. The fixture is 30+ years old.

Returned items due to length. 2 fit perfectly and 2 were slightly longer and would not fit. Will reorder at a later date and see if they have same problem

The good: brightness and color are excellent. I bought over 2 dozen of these to replace under-counter fluorescents that were a constant nuisance to replace and only one has failed prematurely. It should be zero but still pretty good. The bad: The photos are of the bulb that failed prematurely. There is a yellow-brown residue inside the tube. I never smelled smoke or something overheating but from the appearance, I wonder if there might have been a problem of that kind. These bulbs were difficult to install. The fit was abnormally tight. I had to pry the fixture sockets a bit further apart to get some of them in. Much harder than with the original fluorescents but they did eventually go in.

This order arrived in a timely manner and the bulbs firmly Red Bull mini fridge perfectly. Very clean and bright lighting. Excellent price. Good seller.

All of the units I bought developed a humming noise after a couple of months, which (as many studies show) is unhealthy in addition to being annoying. They will end in trash, as soon as I can find a replacement product. Shame, humming lights should be a thing of the past, especially with the LED technology being widespread (and in my household, noise-free other than these).