MultiShape accessories, sonic toothbrush attachment with protective cap. The ER-CTB1 attachment is a must-have for your travel luggage, as it quickly transforms the Panasonic MultiShape into an electric sonic toothbrush. Two brush heads thoroughly clean teeth, interdental spaces, and gums. While the ultra-fine brush head, with its 0.02 mm fine bristles, gently removes plaque and bacteria even from gum pockets, the Multi-Fit head is designed for thorough cleaning of chewing surfaces and uneven tooth surfaces. Its triangular edge bristles gently reach into the interdental spaces as well.