The 1/2" Root Rat is the must have for every drain technician, Goes around 90 degree bend in 4" pipe..  The 1/2" Root Rat combo kit includes chain and cable rotors, stem, extra parts and cable and chain in a tool kit  Combination Chain/Cable Head Cutter.  Ideal for roots and grease. 

Height 3 3/4" Width 2".  Weight 1 1/2 lbs. Quick chain replacement. Stainless high speed thrust bearing. Chain pocket accepts both bike and flail chain.