[product design focus] • The small-sized brush head makes it easier to clean the inner side of the cheeks and the more difficult-to-brush teeth. Sharpening the silk bristles can increase the feel of the gums and improve the brushing of the teeth. • The handle and base are made of metal, which can be reused and reduced. [bristles] Brushing: The hair ends are specially treated to not damage the gums and enamel. The brush head and soft hair (sharpened silk) designed to match the Asian mouth shape are different from the burden and damage caused by the general bristles on the teeth and gums. [brush handle and base] Handle: In order to be able to be reused and to reduce the adhesion of bacteria in the wet bathroom, we use metal material, which can reduce the consumption in addition to cleaning and disinfection. 【Precautions】 1. Rinse with water once before use. Wash thoroughly with water after use. 2. This product is for brushing only and should not be used for other purposes. 3. Do not place this product in a solvent that is easy to dissolve, such as sterilization or bleaching, or hot water at 50 °C, so as to avoid deformation and deterioration of the upper end. 4. The aluminum alloy handle is harder than the general plastic toothbrush. Do not walk or play during use. Please pay attention to safety. 5. For personal hygiene, it is strongly recommended that the brush should be replaced every 2 months to maintain oral care. 6. The combination method of this product is the thread turning mode. When replacing the brush head, please turn the joint part lightly, do not use excessive force to twist or directly pull out, so as to avoid personal danger and product damage. 7. In order to optimize the product design, RADIAL ROUND will make some fine adjustments in the combination of the toothbrush structure or the external body type to make the product better. 8. The replacement brush head can be stored at room temperature for 2 years. In the future, you only need to purchase the brush head replacement kit to replace it. 【specification】 Brush: (soft) soft tip bristles - PBT (about 1.5 cm long) heat resistance 0-50 degrees c Brush head: PP (about 6.8 cm long and about 1.2 cm wide) Heat-resistant 0-100 degrees c Handle: Aluminum handle (about 11.6 cm long x 1.2 cm wide) Base: 304 stainless steel (about 3cm long and about 3cm wide) Outer packaging: boxed (paper) Number of entries: 1 handle, 2 primary brush heads Applicable age: 12 years old or older Shelf life: 2 years of storage at room temperature This product is a sanitary ware. In order to ensure hygiene, we will not accept return and exchange services other than sputum.