The Fidelity SAI Tax-Free Bond Fund (FSAJX) is a mutual fund that primarily invests in tax-exempt bonds issued by state and local governments. This fund aims to provide investors with a steady stream of tax-free income while also preserving capital. It is managed by Fidelity Investments and utilizes a strategic allocation approach to select a diverse portfolio of high-quality municipal bonds. FSAJX may be a suitable option for investors seeking tax-efficient income and a lower risk investment option.