Copper woodblock of Mahapratisara

Sosorbaram is one of the Five Protector Goddesses. Mongolians also had a tradition of using metal woodblocks in book-printing such as copper woodblock. The six mantra syllables were engraved 1000 times on a copper wood block. It is designed for printing 100 sheets for making a wheel of 100,000 mantra syllables. The copper wood blocks produce clearer letters and images in printing.