The Keurig K-Duo 5100 Water Reservoir Tank and Lid is an OEM replacement part specifically designed for the Keurig K-Duo 5100 model. This clear plastic water tank has a capacity of 12 cups, making it perfect for brewing large batches of coffee or tea. With a wall plug-in power source, this tank is easy to install and use, ensuring a seamless brewing experience for Keurig Duo owners. Upgrade your coffee maker with this high-quality replacement part for uninterrupted brewing convenience.