This ball takes the QR-7 Pearl coverstock with a polished finish and wraps it around the Modified Tri-Core to offer more versatility allowing it to pair well with medium as well as lighter oiled lanes

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Heavy mid lane roll with strong backend reaction

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Roto Grip Exotic Gem Bowling Ball Weight:15 lbs. This ball takes the QR-7Roto Grip Exotic Gem Bowling Ball Roto Grip Exotic Gem Bowling Ball is uniquely special with it's Micro Trax Pearl coverstock. The crucial factor in this special Gem is that the ball can conquer through the Medium Heavy Oil Conditions of the lane. The bowling ball would skid through the front end of the lane and dig into the midlane with it's Defiant LRG core. Roto Grip Exotic Gem is a high end Asymmetric pearl ball on the market today! Coverstock: