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Discraft Crank Big Z
The Big Z edition of the Crank is in a special version of their Z plastic. From a durability perspective it's equivalent, however it is generally opaque instead of translucent and has a metallic sheen. It also features a special stylized stamp with no words or other branding.
Big Z is a regular product and not a limited edition model, it does not replace the regular Z version of the Crank.