Trinity or Tri-Shakti is Brahma, Vishnu and Mahesh and therefore the Tri Shakti Rudraksha Kavach is created with one bead each of 4 Mukhi Rudraksha (ruling Deity is Lord Brahma), 5 Mukhi Rudraksha (ruling Deity is Lord Shiva or Mahesh) and 10 Mukhi Rudraksha (ruling Deity is Lord Vishnu). Lord Brahma, Vishnu and Mahesh created the world where Lord Brahma is creator, Lord Vishnu is the preserver and Lord Mahesh (Shiva) is the destroyer. The single incarnation of this Tri-Shakti is also known as Dattatreya.
Lord Brahma is the creator of Universe as well as the bestower of Knowledge, Concentration Power and Creativity.
Lord Vishnu is the ultimate power to bless any person with Health, Wealth and Prosperity. Not only this, he is also the supreme protector of his devotees.
Lord Mahesh (Shiva) is also known as Mahadev means God of the Gods and hence, a person is blessed with good Health, Happiness, Good Fortune, Name & Fame as well as Peace of mind. Lord Shiva's blessings are boundless and his forgiveness is endless.