X0 SERIESSTANDARD GRADESINGLE ROW FOR FASTER/MORE AGRESSIVE GRINDING OF CONCRETE & MASONRY APPLICATIONS
X1 SERIESHEAVY DUTY GRADESINGLE ROW FOR FASTER/MORE AGRESSIVE GRINDING OF CONCRETE & MASONRY APPLICATIONS
X2 SERIESPREMIUM GRADESINGLE ROW FOR FASTER/MORE AGRESSIVE GRINDING OF CONCRETE & MASONRY APPLICATIONS