ContacEZ IPR Strip System The ContacEZ IPR System strips are designed for use with clear aligners and other orthodontic treatments. These flexible dental strips, made of stainless steel, conform to the natural contours of the teeth to avoid creating sharp corners and prevent excessive enamel removal. They are ergonomically designed, and each strip is marked with its thickness of the strip and whether it is single (S) or double (D) sided. IPR PLUS Strips IPR PLUS Clear Opener 0.10 mm - Single-sided Opener, Medium-fine diamond, Serrated IPR PLUS Cyan Opener 0.15 mm - Single-sided Opener, Medium-coarse diamond IPR PLUS Purple Widener 0.25 mm - Double-sided Widener, Coarse diamond IPR PLUS Brown Widener 0.30 mm - Double-sided Widener, Coarse diamond IPR PLUS Mint Widener 0.35 mm - Double-sided Widener, Coarse diamond IPR PLUS Aqua Widener 0.40 mm - Double-sided Widener, Coarse diamond IPR PLUS Turquoise Widener 0.45 mm - Double-sided Widener, Coarse diamond IPR PLUS Teal Widener 0.50 mm - Double-sided Widener, Coarse diamond