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. Easy to recycle handle - simply use pliers to remove the bristle section first. We are proud to be members of 1% for the Planet - giving 1% of our total sales to environmental non-profits creating positive change.