KING SHAWhite GU10 Line Voltage Track Lighting Head (Bulb NOT Included) Compatible H Type 3-Wire Single Circuit Track Systems,ETL-Listed

Bought these as part of an LED upgrade to my track lights. Good quality and a great price. These replaced some older heads that had a large base that mounted to the track. With these, there is only a small cube where it attaches to the track so there is now a lot more space on my track if I want to add more lights. Worked perfectly with the Fluxtronics 6W LED bulbs  Fluxtronics GU10 (MR16) LED Light Bulb, Dimmable, 6W (50W Equivalent), 470 Lumens, 3000K (Warm White), Glass Cover, Silvering, 40° Beam Angle, Spot Light Bulb, ENERGY STAR, UL-Listed, 6-Pack  and my new Leviton dimmer  Leviton 6674-P0W SureSlide Universal 150-Watt LED and CFL/600-Watt Incandescent Dimmer, White, 1 Pack . This dimmer works perfectly with the new LED track light fixtures and 6W LED bulbs. Absolutely no flickering and at least for now - everything is brand new - I can dim the lights all the way down to "zero"! Installation was quick and easy and as I said, initially I do not have any issues with flickering or fading to "zero" on my installation.

Good replacement fixture for my out of date track lights.

Nice track lights. I'm using them to convert my old Cooper Lighting lights with the 12 volt transformers for use with more modern, and more efficient 120 volt LED lights.They do work pretty well with the old Cooper Lighting tracks, but I did need to fiddle with the connections a little to get them to make reliable contact with the contact rails in the tracks. Slightly flimsy (my reason for 4 stars instead of 5)...but certainly quite usable. They may work better with some other tracks.The contact to the lamp is a nice ceramic unit. Should take the 50 watt halogen lights without melting.

I bought one to try as I wasn’t sure if it would fit my very old track light. I was pleasantly surprised to have it click into place instantly! I just ordered a few more!I highly recommend these!

I hope the average consumer makes it to this review... I was trying to match some existing lights I bought at Home Depot.. I order three of these and one does not work, another flickers on and off intermittently and the third just turns on and off whenever it feels like it.. total waste of money. If you're looking to match some existing lights I would recommend changing the ones that already work instead of buying these cheap knock offs... Money wasted

UPDATE 6/15/18: These have been going strong and I have already ordered 4 more! Out of the complete set, one item decided to stop working. I removed from track and alternated the light bulb connection points, replaced on track and it came back to life. Not sure what would have fixed the issue, but its been a week and the light is still shining. I can't say enough great things about these, just buy one, save some money and see for yourself why these are a go to track lighting unit in my home.ORIGINAL: These are great, and a cheaper priced substitute for what you’d find in a big box home store. Love the locking feature and they perfectly match the two canisters I originally bought at local store. Definitely recommend.

Very pleased with value, design, and functionality of these when used with LED bulbs. I’d be reluctant to use them with halogens, but who uses those any more?

It is a replacement for the old style similar fixture that tends to melt in the middle where the slot is. It is fairly well made, especially for a replacement. Ceramic twist-on plug takes two prong Halogen bulbs. Should be OK for a replacement of the same configuration.