The Ashoka Chakra (the wheel of Ashok the Great) is a depiction of the Dharmachakra or Dhammachakka in Pali, the Wheel of Dharma (Sanskrit: Chakra means wheel). The wheel has 24 spokes. The Ashoka Chakra has been widely inscribed on many relics of the Mauryan Emperor, most prominent among which is the Lion Capital of Sarnath and The Ashoka Pillar. The most visible use of the Ashoka Chakra today is at the centre of the National flag of the Republic of India (adopted on 22 July 1947), where it is rendered in a Navy-blue color on a White background, by replacing the symbol of Charkha (Spinning wheel) of the pre-independence versions of the flag. Ashoka Chakra can also been seen on the base of Lion Capital of Ashoka which has been adopted as the National Emblem of India.
The Ashoka chakra was built by Ashoka during his reign. Chakra is a Sanskrit word which also means cycle or self repeating process. The process it signifies is the cycle of time as how the world changes with time. The horse means accuracy and speed while the bull means hardwork.