Truthbrush Interdental Brush 0.4mm is an eco-friendly, vegan and effective way to remove food and plaque from between your teeth. This brush is made from recycled materials and contains a 0.4mm diameter nylon wire that is gentle on your gums and helps to prevent gum disease. The ergonomic handle is designed for maximum comfort and control, making it easy to reach even the most difficult spots. With regular use, this brush will help to keep your teeth and gums healthy and happy.