Overview: SAS Traditional nocks are most popular for traditional archery. It comes with an index nock for aligning the cock feather to the arrow shaft to insure proper arrow flight. Features: Indexed For Proper Alignment with Cock Feather Throat of The Nock is Designed to Prevent Dry Fires Perfect for Traditional Bow Arrows Used by Both Beginner or Expert Archers Package Contents: 12 x Nocks