Features: The interdental brush enjoys bristles that are soft and delicate and won't harm the gum, and elastic and durable steel wire. Deeply clean the food residue left between the teeth. With the push-pull handle that is hard to break, the interdental brush is compact and convenient to carry. Instructions: Place the interdental brush on the teeth and slowly move the brush back and forth on the dental gap so as to remove the food debris between the teeth. After each use, clean the interdental brush with water and place it in a dry place. When the bristles are bent, they should be replaced. Parameters: Material: PE plastic + brush + steel wire Specifications: (approx.) pink: 0.6mm/ 0.02in, blue: 0.7mm/0.03in, yellow: 1.0~1.2mm/ 0.04~0.05in, orange: 1.2~1.5mm/0.05~0.06in Package Included: 30 PCS/ box * Interdental Brush Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand Thank you