The KitchenAid Ultra Power Blender KSB5BU Black Top is a 40 oz replacement cup designed for use with KitchenAid blenders. Made of glass and plastic in a clear color, this top is specifically designed for the KSB5BU model. The blender component is also included in this package, making it a convenient and essential addition to your kitchen for blending smoothies, soups, and sauces with ease.