Length: The TenPoint Wicked Ridge Match 400 Alpha-Blaze Lighted Nock Carbon Arrows are 20 inches long Straightness: Each Match 400 carbon crossbow arrow is inspected for straightness to within 0.004 inches Easy Deactivation: Deactivate the easy on/off Alpha-Blaze lighted nock by pulling the nock straight out until the light turns off, no tools are required Alpha-Nock HP: The system features TenPoints Alpha-Nock HP that is equipped with an HP Aluminum Bushing for increased strength and accuracy. Alpha-Nock features a deep bowstring groove, a large smooth radius base, and elongated ears Stainless Steel Insert: The Match 400 Carbon Crossbow arrow features a Stainless-Steel Insert which creates an improved 13 percent FOC, generating up to 20 percent tighter groupings than previous carbon arrows