Led Bulbs on a Wire cord??

I was looking at pages about LEDS on here an I came across, about 6 Led bulbs attached together with a cord an they had them hanging in their grow, I can't find the thread or post at all
So does anyone know what I'm talking ? I been trying to look for it all morning!

is it this


https://www.rollitup.org/t/my-disaster-drawer.832718/#post-10606310