Sof-Lex™ Sanding and Polishing Discs offer superior, time-tested aesthetic results with time-saving benefits. Flexible polishing discs with aluminum oxide coating Four different abrasive grades (fine-medium-coarse), and two disc thicknesses (normal and extra fine) Each sanding grade is identified by a special color-coding system Discs can be easily changed thanks to the disc . pop-on mandrel system Break-resistant shaft with sterile metal mandrel Indications Sof-Lex™ polishing discs and finishing tapes for polishing composite resin, compomer, metal and ceramic materials Sof-Lex™ discs anterior and posterior restorations