The clear cup in the package is the mill jar unit. The corresponding blade unit can be found attached to the blender. Please detach the base unit from the blender and attach it to the clear cup. The sealing ring is located inside the base unit and can be removed for cleaning. Please ensure after cleaning that the sealing is fitted correctly back onto the base unit in accordance with the instructions. The mill jar is perfect for small dried ingredients such as herbs, nuts and coffee beans. The mill jar isn’t included in the FP929 or FP959 packs however it is available to purchase as a spare part.