ContacEZ IPR (0.07mm - 0.50mm) Rainbow Set 24/Pk: 3x Yellow Starter, 3x Red Opener, 3x Dark Blue Widener, 3xGreen Extra-Widener, 2x 0.10 mm Opener, 2x 0.15 mm Opener, 2x 0.25 mm Widener, 2x 0.30 mm Widener, 1x 0.35 mm Widener, 1x 0.40 mm Widener, 1x 0.45 mm Widener, 1x 0.50 mm Widener. Safe, effective enamel stripping for any patient without creating sharp corners or subgingival ledge. Autoclavable (steam heat only, no dry heat, up to 270°F for 10 minutes, 30 psi max). Reusable up to 5 times.