These kits were originally designed for exterior newel posts installations where maximum strength is required. The brackets are super heavy-duty extruded aluminum alloy with a clear coat finish. They have a unique 12 deg angle, which enables easy installation and adds strength. It comes complete with masonry screws, so it is ready to be installed directly into wood or concrete. They have less than a 3/4 in projection away from the post, so they can be easily concealed with a trim kit (not included).