Disclosed is a grinder, in particular an oscillating grinder, having a grinding spindle, to which a grinding tool can be attached, and having a housing, and having a dust extraction duct which can be attached to the housing by means of a pivot joint and a latching connection. The anti-cancer compounds are 1,8-diamidoanthraquinone derivatives with amino compounds. The main body section has a living hinge formed therein that partitions the main body section into an upper pivotable portion that pivots about the hinge and a lower portion. The dynamic-connection oriented rate matching factor matches a sum of a volume of data for the services over the connection to a volume of data available in a next frame of data. The comparison module indicates any discrepancies between the digital video master and the duplicate digital video. The accessory units 16, 22, 24 have central recesses with a diameter slightly greater than the threaded male portion 36 but less than the diameter of the post segment thereby engaging the post segment during assembly by inserting the threaded male portion 36 through the central recess.