 
The Clear Poly and Hex Core enhances predictability no matter who rolls it. Whether it is a beginner’s first ball or a touring professional’s main spare converter, everyone can rely on this tried-and-true core.
Core Type
              Symmetric
          16 pounds
RG
              2.630
          Diff
              0.018
          15 pounds
RG
              2.660
          Diff
              0.018
          14 pounds
RG
              2.730
          Diff
              0.018
          13 pounds
RG
              2.780
          Diff
              0.018