Intended for panel blending, paint preparation, and primer sanding, these abrasive discs with pressure sensitive adhesive allows for easy attachment and removal of discs. Each red-coloured disc has a diameter of five inches, a very fine coarseness rating of 320 grit, and a non-vacuum hole design. These discs have A-weight paper backing and use an abrasive material of aluminum oxide. There are 100 abrasive discs per roll.