Suitable for polishing direct restorations including composites, glass ionomers, amalgams, semiprecious and precious metals. Easy to Insert: Abrasive is center gapped on the strip for easy interproximal insertion without abrading contacts. Two Grits per Strip: Each strip performs two functions to save time. Color-Coded: Sequenced from blue to white for easily followed step-by-step process. A choice of 3 grits. Resists Tearing: Polyester backing resists tearing while retaining flexibility and being gentle on the gingiva.