Heavy Duty Concave Root Saw Blade with Adapter Rod and Coupling Adaptor Rod:3 8" There are instances where you Category_Default Category Products Manhole Tools Fiberglass Poles There are instances where you cannot access the upstream manhole and you may need to enter the manhole from another direction and then make a turn in the manhole and go up the line that has denied access Each bridge comes complete with 25’ leveling rope and a male quick connect coupling to fit our fiberglass or Aluminum poles The come in all sizes for you sewer line and also with a 5 16” or a 3 8” adapter rod included They provide great cutting and ripping of roots with the laser cut teeth