Tank Tracks , Agressive , Heavy Duty , Traction

I am assuming these tank tracks will bite into sand and snow,
probably ideal for a machine that is apx 12 - 18 inches long
and at least 6 inches wide.
And I assume they can take a fair bit of weight, and
can tackle rough unlevel terrain .
When I get a pair finished I will be able to confirm this...
I'd love to see what these can do in the sand.

Project so far :
Tracks are complete , now need motors that match good.
If I had to start over I'd leave out idlers and just put a
t