​The 90° stanchion base for a 25 mm tube with a rectangular base is a nautical accessory designed for the installation of stanchions or handrails on boats. Made from AISI 316 stainless steel, it offers high corrosion resistance in marine environments. This stanchion base is designed for 25 mm diameter tubes and its 90° angle facilitates perpendicular installation to the mounting surface. The rectangular base provides stable and secure fastening.