Rod says "Hutchinson Fathom Leaders combine a core of super resistant 45lb Monster Line with a coating of super dense tungsten, one of the world`s heaviest materials. The result is a semi-stiff leader which sinks like a stone, yet has a smooth outer surface".Technical specifications:
Hutchinson Fathom leaders are a dense as lead core, less visible than lead core, less abrasive than lead core and more abrasion resistant than lead core. The looped ends mean no chance of bunching, whilst rigs simply pull free giving no chance of tethering.
Hutchinson Fathom leaders... for that special sinking feeling.