US Mesh and European (FEPA) to Eagle Superabrasives
The chart below shows both the US Mesh and European (FEPA) grit sizes compared the Eagle Superabrasive Standard designation. As you can see in the chart, Eagle Superabrasives Grit sizes are designated as low/rough as 60 and high/smooth as 2000. On our packaging and wheel identification we designate the grit with either a D or B in front of the grit size. The D represents Diamond and B represents Borazon/CBN.
As you move to the 500 and above grit designations the term of Micron Size/grit comes into play. In either case the D and B still will reference Diamond and Borazon/CBN.