Teeth of one jaw fall into corresponding holes on the other jaw and allow to handle and reposition the muscle insertions without their slipping.
4-131s-jameson_muscle_forceps,5-042-graefe_muscle_hook,14-0221s-barraquer_speculum_solid_blades,16-081s-towel_forceps,4-0741s-adson_fixation_forceps_with_teeth,18-305-plastic_sterilizing_tray