The JM SERIES Bats are a customizable bat that has a different knob applied to the same 2 15/32″ barrel.
The barrel has a long sweet spot to a fast tapered handle. Add the knob from the YP66 bat to this barrel and it becomes our JM6-Add the 174 knob and it becomes our JM9 etc. Many more knob choices available. Check out this “build a bat” series!
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