Track Bowling Balls. Inertia dictates an object will remain in motion until acted upon by a greater force. Track unveils its latest breakthrough in asymmetric technology the Inertia. The new Track Clam Shell™ asymmetric core and polished Power Peak Particle™ coverstock join forces for greater length, massively angular backends and explosive knock down power. Incredibly versatile, Inertia is the superior choice for medium to heavy oil. Coverstock Power Peak Particle Weight Block Clam Shell Ball Color BlackRed PearlBall Finish Polished Hook Potential 6 Medium on a scale of 1 10 Low HighLength 12 Medium on a scale of 1 10 Low HighRG Differential 0.051 Medium High Flare on a scale of .000 .080 Low Flare High FlareRG Average 2.51 Low on a scale of 2.43 2.80 Very Low High Break PointReaction Shape Strong Arc Recommended Lane Conditions Medium to Heavy Oil