You are going to see the 505T be a ball that will be stronger throughout the entire lane than the 607A. The 607A is a ball to go to when the lanes break down. This ball is really strong off of the friction. Your 4 ball set-up will be the 920T, 505T, 607A, 300C. This set-up will give you a look on every condition. These balls really compliment each other well.
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