This is a Ultimate Inferno Blue Series is identical to the original Ultimate Inferno only this is a solid blue color with a little red. This ball was never released to the public and you will only be able to find it on bowlingball.com The Ultimate Inferno is a heavy oil ball designed for bowlers who prefer Reactive over Particle coverstocks. The Ultimate Inferno uses the same core as the original Inferno but combines it with a solid 800 grit dull version of Activator coverstock.Brunswick's new Activator Coverstock has quickly established a reputation for excellence in ball reaction, durability and longevity of ball reaction. On the lanes, Activator Coverstock is clean through the heads with excellent mid lane recovery and a strong arcing back end reaction that creates powerful pin action. Owners of the original Inferno have reported that it requires less frequent resurfacing and rejuvenations and is more resistant to cracking than other reactive coverstock balls.Compared to the original Inferno The Ultimate Inferno will match up better to oily lane conditions, longer patterns and heavy carry down. The Ultimate Inferno will match up better for bowlers who struggle with excessively long ball reaction. The Ultimate Inferno will match up better on heavily oiled overunder lane conditions.Brunswick's new Activator Coverstock has quickly established a reputation for excellence in ball reaction, durability and longevity of ball reaction. On the lanes, Activator Coverstock is clean through the heads with excellent mid lane recovery and a strong arcing back end reaction that creates powerful pin action. Owners of the original Inferno have reported that it requires less frequent resurfacing and rejuvenations and is more resistant to cracking than other reactive coverstock balls.UtilityOut of the Box The Ultimate Inferno is an ideal heavy oil ball for players wanting to use a Reactive coverstock.When shinedUsing Brunswick's Factory Finish High Gloss Polish the total hook