Extra tight. Standard. Wide. Flexible handle. Recommended by Dental Professionals. Anti-microbial caps (Antimicrobial properties are built-in to inhibit the growth of bacteria that may affect this product. The antimicrobial properties do not protect users or others against bacteria, viruses, germs, or other disease organisms. Always clean and wash this product thoroughly before and after each use) germ shield. Non-slip flexible handle for comfort and control. Insert brush with comfort wire between teeth. Use back and forth motion. Flexible wire. Flexible grip. Tapered brush.