6 _" Cheeks, 5 _" Mouth. Short Shank Ultra Combination - Dropped Nose, 3//8" Signature Iron Wrapped Lifesaver. Combination hackamore/bit design shares the same concept as the Ultra Combination. The shank has been shortened for horses that don't require as much leverage to maintain control or incorporate correction. The quick link comfort curb distributes equal pressure across the horse's jaw and allows for easy adjustment.