This Interdental brush is designed for medium interdental gaps to help remove plaque and tartar build up that a Toothbrush or Floss can't reach. The handle is made from sustainable FSC Beechwood, suitable for home compost. These medium BPA-free nylon bristles effectively access gaps in your teeth without damaging the gums. - Comes in as a pack of 6 - Plastic-free packaging - ISO 0 / 0.4mm bristle for narrow interdental gaps - Made from compostable Beechwood - Medium BPA-free bristles - Replace each brush every week or until worn - Ergonomic shape & supported by dentists