Quantum Bowling Balls. Brunswick Bowling has placed this back in production exclusively for bowlingball.com.You will not be able to get this ball from anyone else in the country!The Brunswick Fire Quantum was the first ball created using Condensity Technology. BTV engineers have compressed a new reactive urethane formulation around Fire's innovative Flow Thru Mushroom Core. Producing an unsurpassed coefficient of restitution, and powering Fire through the pins with unstoppable action. Combine that with Fire's Hook Potential 17 and you've got all you need to burn the competition.FIRE SPECS Length 4.5Backend 10 Track Flare Potential 7.6 Hook Potential 17 9 dullshiney Center HeavyCover Heavy 3.2.