Elgydium Trio Compact Interdental Brushes 444 is a professional oral care product featuring a special 2+1 free promotional pack. These interdental brushes are designed with professional technology for effective cleaning between teeth and hard-to-reach areas. This promotional pack includes three interdental brushes, where you buy two and get one free. The brushes feature professional technology designed for optimal interdental cleaning. As this is a personal hygiene product, please consult packaging for proper usage instructions and care guidelines.