nib backing for carpet; Source?

[jeandeau]

I wish to make floor mats for custom cars and Hot Rods.  Does anyone know where to obtain the rubber nib backing for carpet mats? or maybe carpet with the nib backing on it?
Thanks

[Mike8560]

Clruthian a member here sell a black rubber backed carpet dales nib. For over. Adler runners ans matts.
IRS not the pointy backiibf seen in most autos.

[stitcher_guy]

Miami Corp. Miami Mike posts on here. Just bought 5 yards of it. It's just a wee bit thicker than what I used to get from the old ISS, but works fine.

[Roadster]

Keyston Bros in Denver sells it.