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COVERSTOCK
For medium-dry to medium-oily lane
conditions
Reactive
coverstocks respond more
aggressively to dry land surfaces,
increasing back-end hooking
action and hitting power.
All Power
Groove reactive bowling balls feature
PowrKoil 17, the strongest reactive
coverstock ever used on a Groove
class ball and Brunswick's DISC
(Differential iIncreasing
Side Cylinders)
core Technology
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