Lot · Training Aids
Baseball Curveball Trainer - double ball
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Sat · Jul 25, 2026
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Condition
Used
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New
Used
Refurbished
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Unspecified
Ships from
ZIP 600**
coalminerd
3,021 ratings · 100.00% positive
Description
From the sellerDesigned to teach the proper spin to reduce incidents of injury to the shoulder or elbow. Used daily by players in youth leagues and above. Used by my son in middle school and even as a warm up tool in HS.
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