Features: - The OptiDisc finishing and polishing system gives your restorations a final polish equal to that of natural dentition. - 4-grits system for contouring, finishing, polishing and high gloss polishing. - For composites, glass ionomers, amalgams, semi and precious metals. - OptiDisc is available in three different diameters, to help reaching posterior areas with ease and without harming the soft tissue. Kit contains: - 20 x Extra-Coarse: Gross reduction and contouring, to adjust primary geometric shape of the tooth. - 20 x Coarse/Medium: Finishing, to remove composite excess, shape secondary anatomy and finish the restoration. - 20 x Fine: Polishing, to erase surface scratches and reduce surface roughness below. - 20 x Extra-Fine: High gloss polishing, to reduce surface roughness to high gloss below.