The product is a set of 28mm x 1" Imperial to Metric Couplings, specifically designed for end feed applications. Manufactured by the brand center, these copper couplings are sold individually, with a unit quantity of 1. With a diameter of 22mm x 1 inch, these couplings provide a reliable connection for plumbing and fitting purposes in the home. The copper finish ensures durability and corrosion resistance, making them a practical and efficient choice for various plumbing projects.