The choice continues to be easy, with the Ebonite Choice Pearl bowling ball. Ebonite took the proven Centrex Symmetrical Mass Bias core and adjusted the shape to lower the differential and introduce the Mod-1 Core. This core creates easy length through the front of the lane and allows for great continuation down lane. The Choice Pearl combines this core with the GSV-1 Pearl coverstock which is a decendent of the coverstocks used in the successful Game Breaker series of bowling balls. This high performance bowling ball is a great choice when you need a ball that will provide easy length on heavy oil. This ball flips hard when it sees friction and provides awesome pin action.