... : Frankfurt ,Fickert and Round 3.Grit:30# - 500# Diamond abrasive brush ◊ Product description: 1.For polishing the granite surface into leather ... granite slab2.Adopt the diamond-impregnated filament.3.Type of brush: Frankfurt ,Fickert ,and Round,4.Grit:30#, 40#, 60#, 80 ...