Roto Grip Bowling Balls. Roto Grip introduces A Brand New wonder into the world, The Epic Quest. Continuing the legacy of power, the Quest™ utilizes the Maximus Core one of the strongest mediumlow RG asymmetrical shapes since 2005. Endowed with our Ultimate Vision Coverstock for supreme grip and consistent performance through medium to high volume oil patterns, we feel confident in saying Your search has finally ended!