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Grit Grading Systems
All KLINGSPOR coated abrasive products, with the exception of Alumina Zirconia and Ceramic Aluminum Oxide, are graded by grit size using the FEPA or P-grade scale.
Some competitive products are graded according to the CAMI (Coated Abrasives Manufacturers Institute) scale.
P-graded products are easily identified by a "P" preceding the grit number on the back of the material.
The chart on this page compares both scales, along with relative size in inches and microns.