This listing is for a set of Etal 5% Silver NitroPak Sil Fos brazing rods with the model number Es-05-125D-24-12ct. These rods are made in Mexico and come in a unit quantity of 12. They are suitable for use in various HVAC and refrigeration applications. The brand of these rods is Etal and they are classified as Sil Fos Brazing Rods. These rods are sold as a unit and are ready for use.