15 games on it, had fit change so fingers were plugged and drilled again in same spot (see pic). Recently resurfaced and polished to box finish. Span is around 4 1/8" cut to cut The 15lb Roto-Grip UFO Alert bowling ball is a high-performance, drilled ball perfect for ten-pin bowling. Made with a hybrid reactive coverstock and an asymmetrical core, this multicolor ball offers excellent performance on any lane condition. With a polished finish and weighing 15 lbs, this United States Bowling Congress (USBC) approved ball from Roto Grip is designed for bowling enthusiasts looking for a top-quality bowling experience.
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