Diamond 141-014 C | 10 PackDiamond Coarse Burs by TriHawk We've had these burs tested by leading prosthodontists and have had great feedback. Some of the prosthodontists now use the Diamond 141 014C routinely for crown and cavity preps as the parallel shape and 8mm height is ideal for most teeth. The larger and sharper diamond particles cut faster and cleaner than course and medium grit burs. The process to make these burs include a careful selection mix of diamond grits. Use