Impressed Current Cathodic Protection System
Silver Graphite Brush
Made of high density low resistant silver graphite
   (80% silver and 20% graphite)

Min. 1 year Design life time

Excellent grounding efficiency

One set (3pcs) per shaft is provided for the most efficient
   grounding i.e. 1 pc of brush is for potential monitoring/reading
   and 2 pcs of brushes are for proper grounding.