Pre-shredder ZATO GF4000.II The Blue Devil industrial shredder is constructed from high-strength steel and are the strongest twin shaft shredders in their class. The low shaft speed ensures the transfer of high shredding torques to cut particularly difficult material and achieve unrivalled performance. The Blue Devil minimises the emission of dust and noise, produces a limited amount of fines and preserves the efficiency of the plant from explosions and shattering materials, ensuring the integrity of the hammer mill and the safety of those who work with it. We ensure maximum quality and machine commissioning in 4 days without the need for civil works or other auxiliary structures.