The Keurig K-Slim K900 Replacement Part Water Reservoir Tank with Black Lid is a compatible replacement part for Keurig pod coffee machines, specifically for the K-Slim and K900 models. Made of lightweight plastic with a matte finish, this water reservoir tank features a sleek black lid for a clean and stylish look. Easy to clean and designed to fit securely in place, this unit is a convenient and practical addition to your coffee maker for a seamless brewing experience.