* Includes eight adapters for use on a wide
   range of engines.
* Forcing screw is internally threaded to fit
   the eight adapters for installation of
   harmonic balancers.
* Adapters sizes:
   7/16"-20, 1/2"-20, 9/16"-18, 5/8"-18,
   3/4"-16, M12x1.5, M14x1.5
   and M16x2.0.