The Radtschlag is the bicycle self-help workshop, financed by the AStA [Student Union]. If your bike has a flat tyre, the lights no longer work, brakes need replacing or anything else, you can come here. You can then repair your bike with the necessary tools under supervision. The advice and repair help is free of charge, spare parts can be purchased for money. The people there will also be happy to help you with advice on buying used bikes or other bike-related questions. You can also hire a BISELA cargo bike (the Bisela 2) here. You will find the Radtschlag in C02-201.