Shri Navdurga Yantra Is Used Toworship All Nine Forms Of Goddess Durga.This Yantra Incorporates Many Mantras Of Goddess Durga Making It A Very Effective And Powerful Yantra.Thish Is A Powerful Yantra For Attaining Desires,Rid Of Business And Personal Problems,To Remove Difficulties And To Conquer Enemies.Nav Durga Yantra Is Worshiped On Ashtami And During Navratras.Markandeya Puran Contains Many Miraculous Uses About Nav Durga Yantra.This Yantra Incorporates Many Mantras Of Goddess Bhagwati That Make It Highly Effective.