The Keurig 2.0 K400 Water Tank Reservoir in black with a silver cover lid is a replacement part specifically designed for the Keurig K400 model. With a capacity of 70 ounces, this water tank ensures that you can brew multiple cups of your favorite coffee or tea without running out of water. Made by the trusted brand Keurig, this replacement part guarantees compatibility and quality for your Keurig coffee maker.