Symmetric because only with this shooting style, release and nock are in one line.
Each nock size had one single mould wich offers highest precision and lowest tolerances.
The nock does not pinch on the nocking point, it rests there with a spring effect. Because of that, the working life is much higher and the Beiter nock guarantees constant release from the bowstring, shot after shot.
The Beiter nock can be shot without a problem with all known nocking points; but the Beiter nocking point is the ideal partner for it, having ideal gliding surfaces.