Wet/Dry Sanding Cubes

[EZ Boy]

I was talking to Paintless Dent Removal guy today who showed me some sanding cubes made entirely of the grade grit specified, to clarrify: a 1.5" x 1.5" x 1.5" cube made entire of say 1200, 2000 or whatever grade grit you wanted. He said it was Meguiars. He likes them because they're easy to use and clean. Anyone come across these or anything similar - don't make me feel small and tell me that EVERYONE uses them and that I live under a rock, because I already know that

 

[9C1]

Yep, I use them. 3000 grade also. They work great to cut down the excess paint when one fills little chips. I had to order the 3000 grit from Megs, I couldn't find anyone who carried it. Even the Megs booth at a couple of big shows didn't have the 3000, but they had the others.
Terry