We all strive to preserve our hard earned dollars and I was at first skeptical of the Hook&loop Blue Disks due to price, and I can now confirm these are great! I have noticed many inferior offerings on the web that just fall apart in short use and don’t bother with cheap wet or dry, which should be listed as wet and fall apart. Obviously 3M is one of the top lines in the US,. I use the 2” Blue Disks on mini-DA and they never clogged or failed. Will buy again!