This ba gua mirror comes in 3 different sizes. You can choose from 4", 5", and 6". Ba gua is consider to be a tool for warding off bad luck and evil. Each side of the ba gua represents a different aspect of life, such as fame, marriage, children, benefactors, career, knowledge, family/health, and wealth. Ideal place to put the feng shui ba gua is on a door or pointing outside a window. The Bagua is an essential tool in the majority of Feng Shui schools.