Traditional two-row segment arrangement Two rows of diamond segments ensure a long service life! Application area: Diamond grinding cups are used for machining the surface of stone and concrete materials. Can be used in commercially available angle grinders or in special concrete grinders that are equipped with enclosed extraction devices (e.g. BOSCH GBR 14CA). For removing formwork residues, concrete projections, paint, graffiti, tar coatings and even thin plastic coverings (up to approx.