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Cross section of a Rawlings Major league baseball. Has a cork center encased in two rubber layers, layers of yarn, leather cover Stock Photo - Alamy
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Champro Official League-Cork/Rubber Core- Synth | Champro Official League- Cork/Rubber Core- Synth CBB-90 | Great For Practice And Games | High Performance Baseballs | Synthetic | Cork/Rubber Core | Kudosports
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