The Beiter Insert-Nock has been designed to be inserted directly into Aluminum Shafts (instead of the cone or a Bushing!), but became very popular especially on Aluminum-Carbon Arrows.
The Beiter Insert-Nock is available in both the Beiter patented ASYMMETRIC shape, as well as in the SYMMETRIC Hunter-Nock.
Size 19/1 (Small String Groove)
Size 19/2 (Large String Groove)
Remember to shoot with the Beiter logo on top!
