Vishva Vajra of Amoghasiddhi Mandala with Syllable Mantra and Endless Knot.
Amoghasiddhi is one of the Five Wisdom Buddhas of the Vajrayana tradition of Buddhism. He is associated with the accomplishment of the Buddhist path and of the destruction of the poison of envy. His name means He Whose Accomplishment Is Not In Vain. He belongs to the family of Karma whose family symbol is the Double vajra/thunderbolt, the Vishva Vajra.