The purple/light blue Fanatic features the I-Block Symmetric core matched with the new Relativity V coverstock to provide outstanding all-purpose ball motion.
The Fanatic can be drilled using the standard drilling techniques developed for symmetric core bowling balls.
At Brunswick, the unique core shape of each individual 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. At 12 and 13 pounds, Brunswick uses a generic core shape with a RG-differential that is close enough to the 14 to 16 pound shape so the same drilling instructions can be used.