4 × 3 3/4 × 4
3000 Grit Abralon
Translated from Japanese:
THE PRESENCE OF THE ROTO GRIP BALL IS INCREASING AGAIN AS THE FIRST RST X-1 BECAME EXPLOSIVELY POPULAR WORLDWIDE.
THE NEW [RST X-1 SQUAD] HAS A CONTINUOUS SKID FEELING IN FRONT OF THE LANE AND STRONG ROLLING FROM THE MIDDLE [RST CORE], AND THE STRAIGHT PERFORMANCE HAS INCREASED BY COVERING THE LOWER [ETRAX P20 PEARL] FROM THE MIDDLE, BUT AMONG PEARLS, IT IS FINISHED IN A BALL THAT CAN BE SAID TO BE "LOTTO MOVEMENT" WITHOUT RAMPAGING TOO MUCH ON THE BACK END.
it is the most suitable product for medium to medium dry conditions where the pin is knocked down by the strong arc-like bend in the back end.
eTrax-P20 Coverstock
The R&D Team has been at hard at work mixing and formulating coverstock materials. Our newest version of eTrax™ Pearl contains a new chemical additive as well as ratio changes in order to produce better traction in the midlane and create more responsiveness to friction down lane.
Roto Star Tour (RST) Core
Professional bowlers like to see continuous motion down lane with minimal deflection as the ball enters the pocket due to their rev rates usually being on the higher side. This logic was the basis of development by the R&D team as they looked to create a core that would maintain dynamics after drilling in order to maintain a higher level of core torque down lane. The larger mass at the base of the core does indeed create that. Especially since when drilled, the thumbhole will always end up near the bottom of the void area not to affect the bottom mass of the core all that much. Thus, making this core a “Tour Level” type core design.
16 pounds
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12 pounds
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