Professional drain cleaning nozzle for industrial use.  Steel bullet head with 1 forward facing jet and 3 rear facing jets, these help to cut a hole through the obstruction and the rear facing jets to drive the nozzle ahead so undermining the blockage and clearing the way.  Max. working pressure 5500 PSI / 380 Bar up to 36 litres / minute.  050 nozzle size, 0.75mm diameter nozzle.  3/8" female screw thread connection.