The driving of rod network belts is effected by rollers with mounted sprockets. These sprockets are adjusted custom-fit on the respective dimensions of the rod network belt, the roller or the drum-motor. By this an optimal belt run is guaranteed. Depending on application and operating temperature plastic, steel or stainless steel can be used. Due to a special material our sprockets can also be made detectable for metal detectors. Even smallest fractions can be detected during the ongoing production, and the rate of contaminated products will be decreased.