The in-ground mounting posts come as a set of two, and are designed to add just a bit more stability to your portable tables. This mounting option is designed for use in grassy or dirt areas, and can be used to ensure that the tables do not get moved inadvertently. Each set of two consists of a post with a flat top that goes into the ground, and an additional rounded piece that fits over the table leg. These two pieces are screwed together tightly on each side of the table to provide a secure, stable setting that cannot be dumped or tilted. The in ground mounting posts are designed for use with all portable style tables. They cannot be used with tables that are not portable, as those have their own separate securing mechanisms. Posts are made of the same durable steel as the portable table frames.