A X-Blem bowling ball from SPI Bowling Products (Storm, Roto Grip, and 900 Global) will have an X stamped by the serial number. X-Blems are seconds due to a cosmetic blemish similar to an X-Comp, but the specifications fall out of the 2-4" & 2-4oz. range. The reaction of the bowling ball will be the same as the first-quality ball.
The Ion Pro Solid expands the Premier line with a consistent, asymmetric core shape designed for reliability. Featuring the TX-16 solid cover enhanced by Power Edge technology, it delivers a sharper backend reaction than the Ion Pro Hybrid. At its heart is the single-density Element Tour A.I. Core, built with a low RG, medium differential, and a mild PSA—an ideal combination for control on tougher oil patterns and seamless performance in variable league conditions.
Here's what Storm has to say about the Ion Pro Solid:
The Ion Pro Solid expands the Premier line with a consistent, asymmetric core shape designed for reliability. Featuring the TX-16 solid cover enhanced by Power Edge technology, it delivers a sharper backend reaction than the Ion Pro Hybrid. At its heart is the single-density Element Tour A.I. Core, built with a low RG, medium differential, and a mild PSA—an ideal combination for control on tougher oil patterns and seamless performance in variable league conditions.
