Who makes the 3" or smaller disc pads for the 3" Trizact sanding discs?

[oldmodman]

On the 3M Trizact page it talks about a 3M disc pad but I can't find it anywhere on the site to order one.

3M Trizact Hookit II Foam Discs P3000, foam sanding disc, 3M Tri-zact sanding discs, compounding disc