Go for Shock and Awe with the Roto Grip Haywire.
The Middle Roll 70 core has been featured on many Roto Grip balls and delivers a Medium RG/Medium Differential, giving the ball the ability to read the midlane and come back with a great (but controllable) backend.
Wrapped around this core is the 80H MicroBite coverstock featured on the Hyper Cell. Sanded to a 2000-grit finish, this ball bites, grips and charges towards the pins on heavy oil conditions. The electric Navy/Peach/Sky Blue gives a shocking reminder to your opponents as to which ball just destroyed them.

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