COLGATE Extra Clean Toothbrush Full Head FIRM #40 (Pack of 6) Go to amazon.com Related posts 15 best toothbrushes hard Top recommendation for firm toothbrushes FeatureToothbrush DescriptionNew COLGATE Extra Clean Toothbrush Full Head FIRM #40(6 Pack). 6-Pack Colgate Extra Clean Firm Full Head Toothbrushes #40. Circular power bristles to help effectively clean teeth. Assorted colors.