... technologies, various types of bristle, different designs of handles and packaging. Model No.1604Age GroupAdultUseHomeBristle TypeMediumMaterial of BristleNylon 610, ... . Handle: PS, PP+Soft TPE rubber, the material and color of the toothbrush handle can be decided by customers ... choice, such as Nylon610, Nylon 612and high-grade Dupont,other soft filament and so on. In addition, the customers can ...