a polyester or plastic ball is primarily used for spares.. going straight at spares.. these balls are intended to NOT hook...
They will hook on extremely dry conditions or if you have a ton of revs... they lack hitting power though because most polyester or plastic balls do not have cores in them like other higher performance balls
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16-17 mph,350 rpm,PAP 5 1/2 x 3/8up, HighGame 300 x 4, High Series 808
Book Average 205,PBA Xperience ave180