The product is a lot of two 3" Grinnell Style 772 Grooved Pipe Couplings with green coded rubber. These couplings are made in the United States by the brand GRINNELL and are designed for manual valve operation. They are not a custom bundle and have not been modified. These couplings are used in the field of hydraulics, pneumatics, pumps, and plumbing for various industrial and business applications.