[Sinocelt]

https://www.ebay.com/itm/265559541090?var=565354284247

Here's the review I left on eBay:

The seller keeps you informed every step of the way. Delivery was fast, and the cable was very well packaged. The cable looks really solid, my! It's heavy, too, so it's a cable to use on your desktop, rather than on the go. I'll post pictures of the packaging and of the cable near other cables, so you can have a better idea of the cable's thickness.

I forgot to mention one potential negative: With one of my earphones, sometimes one of the channels can be silent until I turn the male end of the earphone's cable inside the female end of the cable extension. I don't have that problem with my other cable extension (the copper-white one, also in the attached pictures).