In a fast changing world I believe it will be a very long time before the LED is displaced by a new technology...these bulbs are leading the charge. Instant, bright light is the hallmark of these tubes. We chose the 6000K light and love it for the garage area and task lighting!

Important point: These tubes come in two designs, 1) Single ended and 2) Double ended tubes. Single ended tubes have a two prong connection on one end and double ended tubes use traditional wiring with two prongs on both ends. These light tubes require a simple modification eliminating the ballast and rewiring the tube base (tombstone). Directions for installation were included with the tubes, but, you need to know the directions cover installation of other tube designs, so you need to look to the bottom of the instructions for the simple modification. Youtube will show you if you don't get it right away.

Tubes produce enough light to make you look away and leave bright spots in your vision for a few minutes. :)

These LED tubes are an excellent product. I give them 4 stars only because they make the installation sound complicated when is is not. Here's why.

I have these 4 LED tubes in my the kitchen for a month now and we are pleased with their performance so far. I instilled them myself in 45 minutes once I figured it out. . However, I spent an hour getting through the confusing instructions. The seller really makes the installation confusing which might make you reluctant to attempt the installation yourself. It's quite simple. There is only one end of the tube that requires power and it is so marked. The prongs on the other end of the tube are for holding the tube up that end and have no power requirements.

For discussion, you could stick the two power end prongs of the tube in a wall socket and the tubes would light up. It's that simple. But please don't try this. I only want you to get the picture. Standard end caps provide power to the tubes with 2 wires. One end prong gets the hot wire and the other prong gets the common. And, it doesn't matter which prong gets which on the LED tube. So don't be confused. Just know to wire the fixture's end caps on the power end so that one prong gets the black and the other gets the white. Remove the ballast(s) and dispose properly. Cut out the wires to the non-power end caps because they are useless. All the non-power end caps do is hold up that end of the tube!

If you have the instant start ballasts,it doesn't matter. Forget about end cap 'shunt' BS because it just doesn't matter either. It will say on the ballast if it is instant start and you are going to remove the ballast(s) anyway. What matters is that if you have instant start, the existing end caps can't be used. If this is the case, simply pop out those bad boys, cut the wires close the the end cap(s), pop in the new end caps supplied with your LED tube order. Wire these new end caps as discussed before, where each end cap will have one side to black and the other to white. If there is more that one tube and end cap in the fixture, simply wire such that on side of each end cap gets wired to the white and the other side gets wired to the black.

Of course, you will want to be sure the fixture is grounded with the green/copper wire. It probably already was so you needn't mess with that wire. If the fixture does NOT have a ground connection (very unlikely), you will want to contact an electrician.

Excellent replacement for aging fluorescent lights, DON'T replace fixture, use these instead. HOWEVER - BEWARE instillation requires moderate electrical skills. This is NOT for first time newbies! This is NOT just removing the old fluorescent tubes and putting in the new tubes!

I find that the fixtures did not have to be removed from the ceiling. I could perform the conversion in place. You have to open the "works", with the POWER OFF (of course!!!) use clippers to remove the old wiring and remove the ballast (black boxes) (which then have to be properly disposed of - please don't place in trash,). You are going to have to be FAMILIAR with WIRING ELECTRICAL units with full 120-volt house current. You will need 14 ga solid core black and white wire, wire nuts, (tools like clippers, strippers, screw drivers, pliers) and you will need the new tombstones provided with some of the Hyperikon kits.

If you do not know what a "WIRE NUT" or a "tombstone" is plan on hiring an electrician to perform this conversion - so add $100 - $200 to the price of conversion and the usual 'two week" wait for an electrician.

I have wired fans / lights before and felt barely comfortable with this conversion. I was able to google a video about performing this conversion - I HIGHLY RECOMMEND YOU WATCH SUCH A VID BEFORE YOU ORDER such as this: [...]

I started with a set of 4 in the 5000 K and found that they were O.K. in the laundry room (if there is a spot on your clothes it really show up) but way too bright for the kitchen. I was so pleased with the first items that I ordered two more sets of 4 in the same brand but in the 4000 K range. Both the 5000k and the 4000k produce more usable light then the fluorescent lights did. The change over from fluorescent was easy. They include detailed instruction for all different type of ballast that may be installed in your fixtures for shop lights. These use less power and produce less heat. I am going to upload some photo's to try and show what the difference is with the 5000k, 4000k, and the fluorescent. 1st picture 5000k with cool white fluorescent. 2nd picture 4000k and 5000k. 3rd picture 4000k, 5000k and fluorescent. 4th picture cool white fluorescent, 5000k, and 4000k. The pictures don't show up real good due to the fluorescent lights changing the properties of the picture but maybe you can get a idea of which one you may want. I would say the 5000k is close to the old daylight fluorescent. The 4000k is a bright white light that doesn't have a equal in fluorescent lights. If you want to stay with the fluorescent cool white you will have to go with a 3000k or 2800k light.

I put these in a cheap T12 fixture. Since you're cutting the ballast out, it makes no difference. Worked like a charm. I'm happy with the 5k color and satisfied with the light output. Wish it was brighter though. I mean, you're wiring 110VAC directly to the bulb. There's plenty of power available for them to step it up a notch and still keep everything cool.

Oh and one of the tubes had a random piece of metal floating around inside of it. Hope it doesn't short anything...Pic posted. The picture taken inside my garage was taken with no other light/windows. Total darkness. So, it does pretty well.