Has anyone tried these? I have tried one so far(4000). I would like to know what you think if you have used them.


The backing material is a denser material than other pads I have used. Kinda of makes it not fit my sanding cup well actually. The grit is different from any of the others I have used as well.


And if you have used them, why is the 4000-pad white when the others are all grey?