Download the PDF:
http://www.mahavajra.com/files/Maha%20Technique_EN_book.pdf
Maha Vajra teaches about the philosophy of Kuji-In, complementing with technical aspects of the mantras and mudras of various traditions. It is recommended to purchase the Kuji-In books from Maha Vajra, to complete your Kuji-In training. http://www.Kujiin.com