Beautiful bamboo interdental brushes by Truthbrush. Made to our own exclusive design, these are ergonomic and easy to grip. Use gently to clean between the teeth. These come in a pack of 5 and have 100% BPA-free nylon bristles The red packet is 0.5mm size & the pink packet is 0.4mm size. There are 20 packets of brushes in a case. Easy to recycle handle - simply use pliers to remove the bristle section first. The brushes are hand wrapped in tissue and a fully recyclable pillowpack. We carbon offset its journey from the factory to us, and from us to you. Truthbrush are proud to be members of 1% For The Planet - giving 1% of total sales to environmental non-profits