The Match 400 Carbon Crossbow arrow features a StainlessSteel Insert which creates an improved 14% FOC, generating up to 20% tighter groupings than previous carbon arrows. Each Match 400 carbon crossbow arrow is inspected for straightness to within .004". The arrow is equipped with TenPoint's AlphaNock HP. TenPoint's AlphaNock features a deep bowstring groove, a large smooth radius base, and elongated ears. The string on TenPointâ™s crossbows wraps tightly around the center of the AlphaNock to yield straight nock travel and precision downrange accuracy, while minimizing string serving wear. The AlphaNockâ™s deep groove "holds" the bowstring in place on extremely narrow crossbows to prevent âœshootoverâ• or "shootunder". The 20inch carbon shaft is fletched slightly offset and is fitted with a 61grain aluminum insert and 3.5" Bohning X Vanes.