3M™ Standard Abrasives™ Quick Change Buff and Blend HS Discs High strength (HS) Buff and Blend material delivers the best results for light deburring and final finishing. Dense, stiff construction withstands high pressure without folding over, improving productivity. Aluminum Oxide mineral cuts sharp, helps produce a consistent scratch pattern, and works well on many different metals. Easy fastening and swapping of quick change discs enhances tool efficiency and worker productivity. Three grades to choose from for varying degrees of aggressiveness and finish: Coarse (CRS - green), Medium (MED - blue), and Very Fine (VFN - maroon) Pack of 50