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These are really good value for the money. They are very bright, bordering on harsh. To clear up some confusion, because the description certainly does not help, these are designed to work without ballasts. The description of the item says it works without ballasts then further down it says it will work with ballasts. This is not the case. These are for rewiring your fixture and using it without a ballast. It's quite easy to do if you have even a rudimentary understanding of electricity. Rudimentary is about as good as I would put my understanding and I am happy with the results. Here's hoping they last a while.
What great light! We used them under the kitchen cabinets to illuminate the counter tops. Loved them. We were expecting long life. Not quite 6 months after install three tubes suddenly failed when we turned the switch on. The failure mode was on-off flicker 3 or 4 times and then off permanently. Was this a bad manufacturing batch or a design flaw? Can’t say for sure, but how do you explain the simultaneous failure of three out of four tubes after such short in-service time. The fourth one is still working.
The bulbs that did work are nice and bright. The two that do not work will not light at all and I suspect that they probably have broken internal supplies. Based on other reviews, just beware that you may need to exchange if you get a bad set.
It works great without the ballast. There was some confusion about the bypass steps between single and dual ended tubes. There is a diagram on the internet and the process is easy as long as you follow that.