Most all manufacturers have adopted the European grade system as an industry standard. The letter P is used with the grit size (P24 coarse- P1200 super fine) to help identify the grading system called P graded.
Most all manufacturers have adopted the European grade system as an industry standard. The letter P is used with the grit size (P24 coarse- P1200 super fine) to help identify the grading system called P graded.
