... limestone slate, sandstone, travertine and so on. SpecificationsDiamond abrasive brush 1.Polishing granite surface into leather-look . 2.Type: Frankfurt ... ,Fickert and Round 3.Grit:30# - 500# Diamond Abrasive Brush are used in marble, granite, limestone slate, sandstone, travertine ... granite slab2.Adopt the diamond-impregnated filament.3.Type of brush: Frankfurt ,Fickert ,and Round,4.Grit:30#, 40#, ...