They have changed up the core from the original Match ball to offer more flare potential and more hook with the Stinger 2

NFL Pittsburgh Steelers Add On Bowling Bag

Core: Ludicrous Asymmetric with Scoop Technology

57 (for a 15# ball)

OnTheBallBowling Harry Hook Bowling Ball by Dave Savage Weight:15 lbs. They have changed up theThis ball will boldly stand out on the lanes with it's Harry Hook design by Dave Savage! This is a custom bowling ball made to order. It can take 1 4 weeks to create, cure and ship the ball. Coverstock: Plastic Ball Featuring: Dave Savage Design Harry Hook Ball Finish: Rubbing and Finishing Compound Single Buff Recommended Lane Condition: Any This ball may have a seam where both halves meet. A few tiny pit holes in the cover stock of the ball are