... multi-layer circuit board surface cleaning polishing. Non-woven brush rollers of all types,made of Japanese double star abrasive ... ( ZHD ) & ( Rain ) includes wide ranges of non-woven abrasive brush, flap wheels, sheets, disc, unitized wheel, strip-off wheel, steel ... SURFACES,REMOVE PAINT,RUST AND CORROSION OF CONDITION ABRASIVE GRIND LINES.SUIT FOR:PHOTO FRAME,WATCH,STRAPCONCOLUTE WHEELSIZE4"6"GRAND60# ...