 
  Release Date
              Overseas/International Release
      
  Factory Finish
              500/1000/1500 Siaair, Crown Factory Compound
          HK22 - Aggression Hybrid Coverstock
Type
              Hybrid Reactive
          Gas Mask Core
 
The Gas Mask core is the most iconic weight block in bowling. It is known for its large flare potential, versatility amongst bowling styles and its backend bite.
Core Type
              Asymmetric
          16 pounds
RG
              2.510
          Diff
              0.048
          MB Diff
              0.015
          15 pounds
RG
              2.500
          Diff
              0.058
          MB Diff
              0.016
          14 pounds
RG
              2.500
          Diff
              0.056
          MB Diff
              0.016
          13 pounds
RG
              2.589
          Diff
              0.043
          MB Diff
              0.011
          12 pounds
RG
              2.612
          Diff
              0.043
          MB Diff
              0.011
          