Automatic dosage unit comprising storage unit, conic grinder driven by a motor, identification unit, funnel, fastener, and locking device, arranged to grind a programmed amount of a given product directly into a specific collection unit. E.g. in connection with the storage unit being filled with coffee beans, a caffetier is inserted into the fastening mechanism, whereupon the dosage unit automatically registers the size of the caffetier and a pre-programmed amount of coffee is ground directly into the caffetier. The new in this invention is that it can identify the size of the collection unit, that the product is ground directly into the collection unit by means of a hollow drive shaft, that the storage unit is opened upon installation and closed upon de-installation, as well as that the collection unit is fastened by the dosage unit for the entire duration of the grinding process.