... surface.3. Production of antique stone surfaces Abrasive Brushes are made of high-quality synthetic filaments completely embedded with abrasive grit, which ... ,24#,36#,46#,60#,80#,120#,180#,240#,320#,500#,800#Fickertsteel,24#,36#,46#,60#,80#,120#,180#,240 ... 180#,240#,320#,500#,800#Round φ200M14 ,M16steel,24#,36#,46#,60#,80#,120#,180#,240#,320#,500#,800# High Quality Polishing Brush ...