The Match 400 Carbon Crossbow arrow features a Stainless-Steel 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 Alpha-Nock HP. TenPoint&';s Alpha-Nock features a deep bowstring groove, a large smooth radius base, and elongated ears. The string on TenPoint&';s crossbows wraps tightly around the center of the Alpha-Nock to yield straight nock travel and precision down-range accuracy, while minimizing string serving wear. The Alpha-Nock&';s deep groove "holds" the bowstring in place on extremely narrow crossbows to prevent "shoot-over" or "shoot-under". The 20-inch carbon shaft is fletched slightly offset and is fitted with a 61-grain aluminum insert and 3.5" Bohning X Vanes.