CFT v4.5 is the next progression in Chemical Friction Technology. The CFT v4.5 coverstock has a lower friction factor than CFT 3.5 which improves length through the heads and midlane without sacrifi cing the quick response and improved traction on the backend. The proven twocomponent asymmetrical IBlock core enhances the CFT V 4.5 coverstock to create maximum forgiveness, strong entry angles and versatile drilling layouts. With its High Gloss fi nish, the C (System) 4.5 INT will off er a lower friction factor than the C (System) v4.5, with response time to friction similar to the C (System) 3.5. The new C (System) 4.5 INT is best used on medium to mediumoily lane conditions when you need to use a breakpoint further down the lane with a quick response motion to increase pin carry. The C (System) 4.5 INT can be drilled using the standard drilling techniques developed for asymmetric bowling balls. The unique core shape of each Brunswick ball is used for weights from 14 to 16 pounds. This approach to lightweight ball engineering provides bowlers with consistent ball reaction characteristics across this weight range. The same drilling instructions can be used for 12and 13pound balls. This is because Brunswick uses a generic core shape with an RG diff erential that is close enough to the 1416 pound shape.