How to Use: Use a straight Interdental brush between the front teeth. Insert the brush gently between your teeth. Do not force the brush into a space. Move the Interdental brush full length back and forth and it will rotate itself and cleans the Teeth flawlessly. Features: * Toothbrush head can be combined combinatorial part. * If you push or pull the main body handle due to the rotary toothbrush head foreign substance dental plaque can be removed. * Due to the rotary toothbrush head foreign substance removal and gum massaging effect * You can save costs because you don't need to use battery or electric motor. * After use toothbrush head can be kept hygienically in a depository. * Due to ventilating opening toothbrush head can be natural drying. * Due to compact and lightweight easy storage and portability. * Patent product Automatic rotary inter dental brush. Caution: * Don't strong force while the toothbrush head combine with combinatorial part. *If you use the toothbrush in bending it might not be working.