- MASTERY MART Dimmable GU10 LED Light Bulbs, 5.5W Bright 2700K Soft White 50W Halogen Equivalent, 400lm Energy Saver for Track Lighting Fixture, Kitchen, Basement, Living Room, 25000 Hours, 10 Pack

Bright, Efficient, and a Perfect GU10 Upgrade These Mastery Mart GU10 LED bulbs are easily one of the best replacements I’ve found for traditional 50W halogens. I installed them in both my kitchen track lights and an older stove hood fixture—places that demand steady, bright, and cool-running light. The 5000K daylight tone is crisp and clean, ideal for cooking or task lighting where you want full visibility without harsh glare. Installation was simple: twist and lock into the GU10 sockets, and they powered up instantly. The brightness is impressive—equal to or slightly better than my previous halogens—but without the heat buildup. Dimming performance is smooth from full brightness down to a gentle glow, with no noticeable flicker on compatible dimmers. After months of use, they’ve remained consistent in color and brightness, with no burnout or flickering. The energy savings are substantial, and the quality feels premium. These are also a good fit for older fixtures that used to run hot or overheat dimmer switches. Bottom line: Reliable, bright, and energy-efficient GU10 LEDs that outperform halogens in every way—perfect for kitchens, track lighting, and anywhere you want daylight clarity without the heat.

Glad to find these bulbs. They fit a stove hood I purchased 20 years ago but worked perfectly. So very bright for cooking area as well. They are quality LED bulbs and the price here was great over box stores.

If you're have track lights with glass shades and you're looking for LED bulbs that match the backlighting of halogen bulbs, good luck! For most LED bulbs in this style, backlighting is non-existent. These bulbs give off enough backlight to light up the shades, which is one of the main criteria I was searching for in an LED replacement. In addition to that, they are dimmable and have a pleasing warm color. At full brightness they are very bright, and they have a wide dimmable range before they start to flicker. I've also reviewed the Phillips GU10 LEDs and I find that these are slightly warmer, slightly brighter, and have just a bit more backlight. I wouldn't say that the Phillips are on the daylight side of the light spectrum, but they are very neutral in color compared to the warmth of these bulbs. I like these better, but they're not so different that I'm going to replace the Phillips LEDs with these.

PRO: They project more light to my kitchen surfaces and floor than my regular halogen 50w gu10 bulbs. I have 10 bulbs in my kitchen so now they only use a total of 55w instead of 500w so they will defintely save on electric bill. I veeified it on my electric meter. the bulbs do not look any different when not on, just look like a normal bulb. no LED stuff visible. CON: I got the 5000k Daylight bulbs so they would be brighter not the 2700k Soft white. as a result the light cast is not yellow but industrial white. they will take a while to get use to. I was hoping they would light up the decorative glass globe fixture like my old halogen bulbs did. the old ones have a clear base that light reflects out of and lights the glass fixture. these new bulbs are clear too but no light or not much is emmited to the sides to light it up. because the base of the new bulbs do not emmit light to light up the glass fixture the ceiling area is darker and does not reflect any light from the fixture. so the ceiling is dark now. see picture that has four bulbs. two on left are the new daylight LED and generate more light under them. but the two on the right are incandescent and do not generate as much light downward but do light up the glass much better for a more decorative effect of rhe fixture in general. we miss that.

I bought a ten pack in May of '20 to replace the 10 halogen 50w bulbs in some lighting. At 6w (advertised) each they are using 12% of the energy and just as bright as the ones that came with the light fixtures. The bulbs get warm, but not egg cooking hot like the old halogens. As of now, February '23 I have one bulb of the 10 that has started flickering occasionally. I don't know exact run time, but the set of five that needs one replaced is the fixture that gets more use than the other. They are plenty bright for their purpose as well, just as bright as the halogens. I'm impressed with the run time and energy use. I'm tempted to measure the actual power draw and compare to the advertised amount. Overall a good purchase, I'd recommend them.

Great lights to replace our existing ones.

Replaced bulbs in my all black track lighting purchased from Home Depot many years ago. The lights themselves have obscured/clear lenses - not so clear that you can see the diodes when they're off. The lenses are all I see on the lights there's nothing about them stands out as awkward next to an all black housing. It looks elegant - like it's supposed to. The change from halogen bulbs was easy and the fit was perfect - virtually the same as the halogen bulbs fit. The ends locked in to bulb sockets just fine with little to no play in them. When powered on I was amazed at the brightness and color warmth of these bulbs. I have 8 bulbs spanning a 12' section of track lighting and these bulbs make it very bright but not overly so. The warmth color of 2700K was the perfect warmth for the room. Very happy I went with these. Didn't break the bank either. They're great!

These brighten a very dark kitchen. My old ones made me realize I’d chosen the wrong lumens. What a huge difference! Not sure about longevity yet but I’m keeping them!

I recently purchased the Mastery Mart GU10 LED Bulbs to replace my old LED bulbs that lasted about seven years. These bulbs seem well-built and durable, and the daylight white (5000K) light is crisp and bright. The 40° beam angle provides focused lighting, making them perfect for spotlights. So far, they’ve been working flawlessly, and I appreciate the energy efficiency compared to traditional 50W halogen bulbs. If they last as long as my previous ones, this 10-pack is an excellent value for money. Highly recommended! As you can see in the photos the difference from the old yellow light to new bright light.

I noticed that the light coming from my Philips halogen bulbs had "yellowed" over time. I use the bulbs to illuminate a picture and need a more "neutral" white for truer colour representation. I wanted the brightness to match a chandelier on the same dimmer circuit and the colour temperature to be harmonious with my other halogen lamps in the room (Reference bulb: Radium Skylight, 12V, 50W). I have included pictures using a Mastery Mart bulb 2700K to light 1/2 of the picture and my reference light the other half (more or less). The light fixture holding the Mastery bulb is on the ceiling and not in frame of the photo. In the second photo I use a Dewenwils 3000K vs my reference light. To my eye the 3000K is too white / gray when compared to the reference light. The Dewenwils is a very fine bulb, especially the 400LM as it illuminates the back of the light fixture very much like a true MR16 bulb, has excellent dimmer performance, great dimmer range, and completely flicker free (on my old school circa 1978 dimmer switch). The Mastery bulb is excellent in most of these categories as well, but boasts lesser wattage and higher life expectancy. But the clincher was the 2700K of the Mastery bulb, it is more harmonious with my existing lighting.

Our range hood in the kitchen came with 35w halogen bulbs from previous owner and recently they finally stopped working so we had to look for replacement bulbs. I wanted something more energy efficient rather than 4x of 35w, and 4x of 4.5w seems much better. These fit well into the sockets but I'm not sure about their dimming capabilities. Advertised to be non-flickering but our range hood has two brightness settings, high light (max brightness) or low light (which is supposed to be around half as bright) and these bulbs don't quite work well on the lower light setting (they do flicker a bit on that seettting) - perhaps that's due to the design of the range hood not actually having a true dimmer. I do like that it is for a bulk pack of 10 bulbs so we will have spares if and when a bulb goes out. They have a good brightness and the soft white light temperature is comfortable. I do wish the dimmable feature worked with our range hood, it would have made these led bulbs perfect

We had stuck with halogens for probably longer than we should've for our track lighting, but as we change our households lighting to LED one by one it was a eventual changeover. The price for LEDs have become very competitive as in the past there was quite a big price gap and more incentive to stay with halogens. I'll stress that the competitive price point seems to be inclusive to brands such as these on Amazon, as I couldn't find anything this affordable at say Canadian Tire. These were slated to replace our 50W halogen bulbs, and thus far they are doing a tremendous job. The aesthetics of the light produced is a bit different, not as sharp and cutting but more of a glow and spread - we quite like it. Aside from the energy savings, it's also not volcano hot and it's supposed to last a lot longer - the halogens we have seemed to need replacing very often. Also worth noting that they Energy Star and UL certified. If it does as it says, it will likely outlast our tracking lighting itself. The set came very fast and very well packaged. So much so that I thought it warranted a picture shoutout. Sometimes you get things from off brands here and it comes in the most questionable of presentation, but this felt professional grade. The lights themselves feel solid too, so far we're very pleased - bright, comfortable, no lag, flickering or buzzing of any kind.