For easy use and the rapid elimination of the obstructions of pipes. Very fast inversion of the advancement/return direction of the spiral through rapid switching even at full load without inverting the sense of rotation of the engine, avoids the formation of cuppets of the spiral in the event of sudden resistance caused by the obstruction, for a long useful duration of the spirals. Spiral in metal wire for springs, of high value. Special timing. Very flexible for easy advancement even in narrow elbows. Extractions of the bulb spiral (suitable for the pit), therefore particularly flexible. Spiral with soul in spring steel wire for cleaning the pipes prevents the formation of dirt or clogs caused by fibrous material in the curvature of the spiral. Tested engine machine. Very powerful. Robus.
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