Concentrated powerful advance by means of 4 front jet nozzles. The sharp edges cut, break and penetrate through every kind of blockage. Made of wear-resistant, hardened steel. All nozzles from art. 60.050 onward are provided with ceramic inserts. Because of this, the efficiency is considerably higher compared with those nozzles with drilled holes and the service life is several times longer. Applications include Penetrating of completely clogged pipes, Opening of interlaced roots. Opening of frozen pipelines. Flushing out at hydraulic thrust boring.