This is a complete video of TwisterNock and Lighted TwisterNock.

TwisterNock is the first revolutionary mechanical nock that rotates the arrow on your bow string. It mechanically enhances the spine of the arrow, resulting in extreme accuracy and delivers maximum kinetic energy at higher speed. It rotates the arrow into the target causing massive tissue cut in hunting.

Please watch the video and feel free to leave comment.
http://www.youtube.com/watch?v=qWQU78HDkGk