The Beiter Out-Nock has been mainly designed for Carbon Arrow shafts, but can be used on some Aluminum-Carbon Arrows as well.
The Beiter Out-Nock is available exclusively in the Beiter patented ASYMMETRIC shape.
Remember to shoot with the Beiter logo on top!

4.7 fits
Nano Pro Extreme 550-600 

Medallion XR 1500

4.92 fits  

Nano XR 680

Nano Pro Extreme 450-500

Nano SST 800-900