The 8 spokes of the Dharma Wheel represent the 8 paths of Enlightenment which can help you achieve Nirvana. It is one of the oldest Buddhist symbols that details wisdom in the Buddhist tradition.
Each spoke of this Dharma Wheel represents exclusive teaching as follows: right livelihood, right speech, right intention, right action, right efforts, right mindfulness, right consciousness, and right view. Also known as the ‘Wheel of Law’, it’s existence dates back to 2500 B.C. which is older than Buddhism itself.