^Coming later in the day today.
YES!!!^^^^
Uhh, there are chances that it might slip into tomorrow. Looks like the shipping service has shat the bed and hasn’t called me of the pending delivery and tax yet.
Has anyone measured the diameter? It wasn’t easy to get the LED into the Fenix (fortunately, the E01 has a rubber sealing), and at all refused to fit the Metaminco Bullet. Must be slightly bigger than 5 mm.
I measured it with a digital caliper. The caliper reads exactly 5mm, though it’s not perfectly accurate so it might actually be 5.1mm.
The other reason can be that the stock LEDs are actually 4.8mm. The “5mm” LED family includes both 5mm and 4.8mm (usually the straw hats).
Ah, ok. Since it’s copper, I should be able to work the opening a little wider.
Ah, looks like the logistics has really shat the bed.
The mail man never arrived today 
Let the fun begin!
The "5800k" (5500k?) has landed. You decide for yourself if it's actually 5500k or 5800k. (all pics are taken at 5500k)
Looks nice, would definitely like an order of those!
Nice smooth beam, but there will be people who dislike the slightly greenish edge. Is this a real thing or does it just show up in the pictures?
The greenish edge is quite real, but should be slightly less visible in real life.
What I see also differs from screen to screen. I noticed that the greenish edge is exaggerated when viewed on the phone instead of on the monitor.
seeing the cheap 5mm leds i see in the typical 9 led lights it seems you are correct.
joke is those are henry ford leds.
they can render any color as long as its blue!
it becomes clear just how bad they are when you take 2 harbor freight 9 leds and rplace the leds in 1 with high cri types.
i have a demo pair here to show that.
the ebay high cri make a much larger spot that covered up the stock one like its turned off.
Shipping update:
id30209 – RR278675085TH (1× 5500k)
kame sennin – RR278675071TH (1× 5500k/1× 3400k)
Nismo – RR278675068TH (1× 3400k)
denkiman808 - LX104000012TH (1 x 5500k/ 1 x 3400k)
ludolf - RO247700195TH (1x 3400k)
LowLumens - RR252867131TH (2x 3400k)
AguassissiM - LX104000030TH (1x 5500k/ 1x 3400k)
DavidEF - LX104000043TH (1x 5500k/ 1x 3400k)
tomas_f - RO247700235TH (1x 5500k/ 1x 3400k)
Unheard – RO247700258TH (1× 5500k)
Samples also sent to Djozz in exchange for original Yujis.
Thanks rngwn, received the LEDs in the Netherlands.
Really happy with them 
It is just the cree edition 5mm
^ is that a good or bad thing?
I copied your mod a bit on my granny's headlight ;)
I finally got around to ordering 100 of these unique little 3400K LEDs today!!! Looking forward to working with them on some projects.
Been out of the making and modding lights for a while… but with 2 (…and now looking at 3) PG&E power outages here lately I’ve renewed inspiration to make more custom battery powered indoor lamps and lights.
Lights that run for hours, soft lighting that is warm and comfortable. That’s what is needed when the power is out for many hours! These little warm high CRI wonders have inspired me.
Here's the beam comparisons between "5800k" version of these LEDs vs Original Yuji's 5600k LEDs (Thanks Djozz for sending these to me!). All pics are taken at 5500k white balance setting.
Yuji's: Perpendicular
WTS: perpendicular
Yuji's: beam profile
WTS: beam profile
