Specification:Product Name: Dental Double Sided Stem Polishing DiscsType 1:With hole,Diameter 9.5mmType 2:With hole,Diameter 12.5mmMandrel:1PcsDiscs:100PcsCoarse--Black--Single-sided sandMedium--Purple--Double-sided sandFine-Blue--Double--sided sandExtra Fine--White--Double-sided sandMaterial:1.Double-sided sand (c)2.Metal handle (all stainless steel)Quantity:1Box(100Pcs Disc+1Pcs Mandrel)Feature:1.Perforated double-sided sand, safe and not loose, not falling off sand.2.Special sand planting technology, firm combination, no sand falling.3.Long screw fixation is safe, firm and not loose.4.Stable grits , polishing efficiently , good toughness and high strength , no deformation in rotary polishing .Indications:1.It is suitable for polishing immediately after direct repair of double adjacent holes with resin.2.For labial surface of anterior teeth and adjacent abduction gap and marginal ridge shaping and polishing.