The Roto Grip Wild Streak introduces the Mutated Rotary core which has a higher RG symmetrical shape which helps to give more length and down lane shape in the HP3 line for Roto Grip. This ball also introduces the SureTrax-S19 coverstock that provides more traction than eTrax but goes longer than MicroTrax. The Wild Streak performs best on medium to medium heavy oil conditions and offers a different reaction than what we usually see from the Roto Grip HP3 line of bowling balls.