- Rubber band to prevent sticking to hair
- Special recess between nose and mouth for more space
- Two large holes for better fixing of endoscope
| Article number | Design | Opening width for endoscope | Öffnungshöhe | VE |
| BEGO-01 | with rubber band and without tongue depressor | 21,9 mm | 17,8 mm | 100 units |
| BEGO-02 | with rubber band and with tongue depressor (14.9 mm long and 30 mm wide) | 21,9 mm | 17,8 mm | 100 units |