(T&F) Trimming and Finishing (FG) Friction Grip Needle burs designed for contouring and finishing interproximal margins, occlusal margins, facial surfaces, and cavosurface margins. Twelve bladed finishing burs (7000 series) provide a smooth finish on composite, amalgam, enamel, dentin, ortho debonding, and other dental materials. Best for controlled contouring and finishing.