The Ninja Water Tank Reservoir and Lid CM401 CM400 Coffee Maker OEM Replacement is a genuine replacement part specifically designed for Ninja coffee makers. Made by the brand Ninja, this reservoir is compatible with their CM401 and CM400 models. This product ensures a perfect fit and reliable performance for your coffee maker, allowing you to easily replace a damaged or worn-out tank to keep your machine operating at its best. It is an essential component for maintaining the functionality of your Ninja coffee maker.