The Karma incorporates a familiar light bulb shape Medium RG Performance core that provides easy length through the heads, mid-lane stability while maintaining axis rotation for a strong continuous backend motion.
Core Type
              Symmetric
          16 pounds
RG
              2.527
          Diff
              0.040
          15 pounds
RG
              2.539
          Diff
              0.040
          14 pounds
RG
              2.555
          Diff
              0.040
          13 pounds
RG
              2.574
          Diff
              0.040
          12 pounds
RG
              2.597
          Diff
              0.040