1.Nylon frankfurt abrasiv brush 2.For antiquing marble slab 3.Used on Marble Automatic Polishing Line Marble Antiquing Frankfurt Abrasive Brush Description: Made of Dupont Tynex A Abrasive Filament .For antiquing finish on the marble slab. Used on Marble Automatic Polishing Line. Grain size:36#,46#,60#,80#,120#,180#,240#,320#,500#. Wide range of grain makes it possible to achieve from an opaque ...