Designed for rough feather edging, filler shaping, and metal preparation, these abrasive discs use a pressure sensitive adhesive for easy disc attachment. Each red-coloured disc has a diameter of six inches, a medium coarseness rating of 80 grit, and a non-vacuum hole design. These discs use an aluminum oxide as an abrasive and D-weight paper backing. There are 100 abrasive discs per roll.