3M Sanding and Finishing Abrasive Disc Holder provides a support base for 2- or 3-inch 3M Roloc sanding or Scotch-Brite discs, helping maximize their abrasive performance. For convenience and ease of use, this disc holder is designed to lock easily and securely into a household drill or rotary tool.3M Disc Holder connects 3M discs with pressure-sensitive adhesive (PSA) backings to rotary sanders and die grinders. Our disc holder provides excellent support when grinding hard-to-reach areas.