These are weighted baseballs that I used to gain arm strength and velocity when I was in high school. I went from 75mph to 90mph in 4 months training with these balls. They’re great because they are hard like a baseball and you are able to play catch with them. They are all still in good condition and fully usable.
Pictured are 12oz, 11oz, 10oz, 9oz, 8oz, 7oz, 6oz, and 3oz baseballs.
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