@keith_allan they are hard plastic. Seem pretty durable. They would shatter if you crushed them though. They don’t deform. I was using pong balls before and it was too much with to make the holes in them. I have been able to power 4 strands of 25 with only have power at one end. Have not yet tried further than that.
Thanks Justin!
Are you using the 5v 70a power supply?
Did you establish which pin was data?
I am placing an order with Scott soon so I am glad I found this thread. I’m sure our friend Boots would be interested in them too. It’s not like he is not wanting for new projects. 
thx agn!
@keith_allan
Yeah 350w PSU. I just cut the black ouside away to see the inside of the pixel. Input is the same as all other pixels I have. I can take a picture later. Looking at the side of the pixel that the input wires go to. 5v left, data middle, ground right.
Boots needs less projects…
Thanks! That seems pretty straight forward!
You’re probably right about Boots too. lol