ALPHA-NOCK HP - TenPoint’s Alpha-Nock features a deep groove & large smooth radius base to hold the bowstring in place & prevent “shoot-over” or “shoot-under” 28% INCREASED STRING-TO-NOCK ENGAGEMENT - The design allows the string to wrap around the center of the Alpha-Nock,which results in straight nock travel & precision down-range accuracy, while minimizing string serving wear STRENGTH & ACCURACY - The HP Aluminum Bushing (not included) provides increased strength & accuracy REQUIRED FOR USE - All TenPoint and Wicked Ridge crossbows require the use of an Alpha-Nock HP style nock DON’T SETTLE FOR LESS - With TenPoint, you are arming yourself with a complete hunting system,including accessories specifically engineered to help you fill your freezer or put one in the record books!