The HARDEN four shaft shredders, or name it quad shredders, are perfectly suitable for scrap size reduction applications such as e-waste, rubber tire recycling, RDF production, and contaminated materials where uniformed medium particle size is desired. The four shaft shredders are very robust and built to sustain tough operating conditions without problem. HARDEN four shaft shredders are available in different sizes and works perfectly in combination with other recycling machines.