1.Precision Machine Ground,Heat-treated and Nitrided

2.Aero-Wing Counterweights For Reduce Windage To Increase Horsepower

3.Large Fillet Radii On All Rod Journals

4.Lightening Holes In All Rod Journals

5.Pendulum Undercut Counterweights Reduce Weight and Rotating Mass

6.Ground&Polished to Exacting Tolerances

etc.