These faux plugs have an externally threaded back and feature a Yin and Yang design on the front and back. Yin and Yang is an ancient Chinese philosophy relating to the concept of dualism and how seemingly opposing forces can actually be complimentary, interconnected and interdependent. The ancient principle also teaches that all things exist in the form of these inseparable and contradictory opposites, for example female/male, light/dark and young/old. This piece is perfect for those looking for the stretched lobe effect without the time, pain and commitment.