Refill Packaging with 8 CPS 09 prime interdental brushes. Probably the finest ever interdental brushes. CPS prime brushes can clean in very narrow interdental spaces helping to prevent gum inflammation and bad breath. Once a day is all it takes. These are the finest little brushes on the market with unsurpassed durability. A CPS 09 prime is the second-biggest CPS-interdental brush and fits into not-so-narrow spaces. , , The click system means that your personal, favourite holders can be used - to combat caries in the side teeth, gingivitis and periodontitis particularly easily and effectively. The quality of CPS prime makes a single cleaning movement sufficient: once in and out. Done.