The choice continues to be easy, with the Ebonite Choice Solid 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 Solid combines this core with the GSV-1 Solid coverstock which is a decendent of the coverstocks used in the successful Game Breaker series of bowling balls. This solid coverstock will generate more friction in the oil. This high performance bowling ball is a great choice when you are looking for strong overall hook on heavy oil lanes.