I drilled my Theory at the World Series of Bowling. The pin is really tall up above the bridge about 2 inches, the mass bias is just above the thumb. This ball is the earliest Roto Grip ball I have ever drilled, the closest comparison I can think of is the original Cell. It clears the front of the lane and and really picks up the mid-lane. The biggest difference between this ball and the original Cell is the continuation, this ball is much more continuous then the original Cell. Another home run from Roto Grip!
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David O''Sullivan
Team USA Member