IPR and IPR Plus Strip System is the safest, most accurate way of preforming IPR. Exceptional tactile control through manual reproximation, built in strip flexibility, and patient-safe handed design eliminate stress for both doctors and their patients Contents: Box of 32 (8) 0.10 mm Single-Sided Opener (8) 0.15 mm Single-Sided Opener (8) 0.25 mm Double-Sided Widener (8) 0.30 mm Double-Sided Widener