At least the adhesive backing is worthless on smooth surfaces.

They fit perfectly, are sticking very nicely, and are big enough that they slide across the grout lines rather than into them. And they slide smoothly on the hardwood floor.

These are great when a medium size felt pad is needed. They are the best i have found that actually hold up and work. When done correctly these really do the job.

Good color & great adhesive. The adhesive quality is above norms.

The adhesive doesn't stick, they keep falling off and now my floors are scratched. Will replace with pads that can be nailed on. The glue on those is very weak.