This is a set of 4 items: micro interdental brushes and floss, perfect for narrow gaps between teeth. The floss picks and smooth floss have been opened and used for 2-3 pieces. - Micro interdental brush SSSS, 2 sets of 15 pieces each (unopened) - Floss pick, Y-shaped, slides in smoothly, reaches back teeth and narrow gaps (used 2-3 pieces) - Ultra-thin smooth floss, fits into narrow gaps (used about 2-3 pieces) ★Please refrain from purchasing the floss (2 types) if you are concerned, as they have been opened and used for 2-3 pieces. Thank you for viewing. Please feel free to ask if you have any questions.