... leather-look . 2.Type: Frankfurt ,Fickert and Round 3.Grit:30# - 500# Diamond Abrasive Brush are used in marble, granite, limestone slate, ... producing antique look on the granite slab2.Adopt the diamond-impregnated filament.3.Type of brush: Frankfurt ,Fickert ,and Round,4. ... Grit:30#, 40#, 60#, 80#, 120#, 180#, 240#, 320#, 500#. Abrasive marble SILICON ...