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The Thunder Zone combines a highly successful coverstock called PK Traction - 6 and a proven Ultra Low RG Asymmetric core to create a high hooking ball with strong continuous backend. The secret is in the PK Traction coverstock. The PK Traction coverstock passes easily through the heads, then responds quickly in the mid-lane and continues its strong motion through the backend into the pins that is sure to make a Thunderous explosion.
