Details of Zero Mukhi Rudraksh

i am curious about a zero mukhi Rudraksh since there is almost zero information about it on the Internet. I saw Nepa Rudraksh site showcasing Zero Mukhi, Zero Mukhi Annapurna, and Naag Rudraksh with zero faces. i recently received this zero mukhi rudraksh at Sri Batuk Bhairav mandir, Kashi. Would be grateful to know more about it 🙏