Hook and Loop Sanding Discs (3 in)

They sand stuff

Grit variety is nice. Hold up fairly well but be careful if you're using them to polish something delicate. Usually it's the paper backing that falls apart on sandpaper while walking through the grits. On these, the grit seems to come off first, then material begins to build up and you're left with a gunk ball that risks scratching your part. It only happens when I'm trying to pinch pennies and get more mileage out of them than I have any business getting. Otherwise, they are good. These are the only sanding I need to achieve an optically clear finish on acrylic parts, regardless of the machined finish. Having it all on a drill is a big deal.