The copper Sudharsanam yantra is associated with Lord Vishnu and it represents his chakra. By keeping it in your home or office you invoke Lord Vishnu's blessings and protection. The yantra saves you from evil eye, negative energies, people with evil intentions, obstacles, accidents, and psychic attacks. The yantra is long lasting and it is recommended that you store it in a sacred place so you can pray to it and chant the Sudharshana mantra to enhance its effects in your life. Buy from Giri UK.