One solid brass spring hinge in oil rubbed bronzel. Comes with wrench for adjusting and removable spring pin. Introducing AE Hardware brand 4” x 4” Solid Brass Spring Hinges. These hinges were designed specifically for outdoor use and with the salt-air environment of coastal regions in mind. They work great on custom doors and gates, pool gates, and anywhere you want a self-closing door. For residential or commercial use.