Single Cup Serving with the 0.5 kg hopper. Great coffee grinder size for the small to medium coffee house. Capacity estimated at 0.8kg/min. Safety and space are the key issues for this great grinder. The magnetic system of the discs allows more efficiency in the grind, faster as well as safer. When the hopper is taken off, the grinder shuts off. This prevents injuries to the hand if inadvertently placed inside (Note: Hopper 1.4kg available.) Without the screws in the design easier to clean and calibrate.