A X-Comp bowling ball from SPI Bowling Products (Storm, Roto Grip, and 900 Global) will have an X stamped by the serial number. X-Comps generally have a cosmetic blemish. The Pin (Core Top) distance is in the 2-4" only range and Top Weight 2-4oz. range. The reaction of the bowling ball will be the same as the first-quality ball.
Good things come to those who HUSTLE.
The Hustle symmetric core, as made famous by previous releases in the Hustle line, has a medium RG/low differential making it the perfect combination for a controllable backend reaction.
Featuring the VTC pearl reactive coverstock finished with Reacta Gloss, as originally seen on the Winner, the Hustle M-M will shake, rattle and roll through light to medium lane conditions, providing control and versatility without being overly aggressive.
Here is what Roto Grip has to say about the Hustle M-M:
Built for everyone, period. From the casual bowler to Major title winners at the highest level of the sport, the entire Hustle series provides advanced technologies that work for anyone and everyone. So, whether you are looking for a specific reaction to fit in your current arsenal on lighter oil conditions, or looking to get your very first ball, there is a Hustle that is just right for you!