MultiShape accessories, sonic toothbrush attachment with protective cap. The ER-CTB1 attachment is a must-have for your travel luggage, as it transforms the Panasonic MultiShape into an electric sonic toothbrush in no time. 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 the 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.