Health and Beauty Oral Care Kin Micro Interdental Brush Set 0.9 mm 6 Units Designed for optimal removal of dental plaque that accumulates in interdental spaces and areas that are difficult to access. Due to the diameter of the filament and the cut of the tuft, it is an ideal brush for interdental cleaning of interproximal spaces of 0.9 mm. Angled handle Tynex bristles provide easy access. How to Use: Place the brush in front of the interdental space and move it from the inside out. Use the most suitable size of brush for each interdental space.