12 x 38 mm The Four-Line Tiger Tooth Dzi Bead (Shisen Koga Tenju) is an enhanced version of the Tiger Tooth Dzi Bead. As the strongest amulet against evil, it is believed to give the power to overcome rivals and difficulties, avoid accidents, and win battles. It also provides a strong will and mental strength to overcome adversity, and is said to enhance business prosperity and luck in competitions. It is a very powerful amulet.