The new Quantum Classic Black has been designed with 3.5 times more coverstock increasing durability and
performance longevity with an amazing pin impact you not only see but hear! Why does more coverstock improve the pin
action so much? More coverstock enhances the Coefficient of Restitution which is the ratio of the differences in velocity
between two objects before and after a collision. The higher the restitution, the faster the pins will move after being
struck by the ball, transferring that increased kinetic energy to the surrounding pins producing greater pin action! The
combination of our Relativity Flip solid reactive coverstock with our high-density, redesigned Quantum Mushroom core,
provides effortless skid through the front, maintaining axis rotation for the strongest backend reaction of any Quantum’s
to date on medium oil lane conditions.