Dental toothbrush made of nylon that lasts 4.2 times longer. - Model Name: tuft24 S - Bristle Material: Nylon - Bristle Feature: 4.2x Long-lasting bristles - Intended Use: For dental professionals - Sterilization: Sterilized S Soft Set of 2, white and green. Would you like to try them? Although new and unopened, they have been stored at home, so please understand before purchasing. No pets, no smokers. Thank you very much.