Disc holder for 3" surface prep, sanding, polishing, etc. aka 3m Roloc discs.

Wall mount with screws or use magnets to help keep in place in a toolbox drawer.

Designed for these magnets: https://www.mcmaster.com/5679K97/

Make and share your own versions: https://cad.onshape.com/documents/74d1b03e4521ee12a8f92b74/w/20369f73d08008cb9819d50c/e/a69eda55bd5e72db9fca0e6e