High flow rates, such as those occurring in large sewers and inflows of sewage treatment plants, can only be mastered with appropriately large yet efficient shredders. The twin-shaft grinder XRipper XRG was developed specifically for these applications. The sieves of the High Capacity Units arranged laterally in the housing permit large quantities of (waste)water to pass by unhindered, while catching and holding back the disruptive matter and waste. This is continuously fed into the Ripper rotors which reduce them to a manageable size. For removal of the functional unit just remove a couple of screws on the housing is all that is required.