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.
Introducing the Cove, the newest addition to our 800 Series lineup. Positioned just above the Zen 25, the Cove debuts the revolutionary RB 85 Hybrid Cover and the symmetric Magna A.I. Core. The RB 85 Hybrid is an advanced coverstock developed by our R\&D team to deliver consistent lane read and traction. Paired with the Magna Core’s dual-hemisphere construction, this ball offers exceptional balance, stability, and a smooth, continuous motion from start to finish.
Here's what 900 Global has to say about the Cove:
The Cove is the latest offering in the 800 Series. Fitting just above the Zen 25, the Cove features the ALL NEW RB 85 Hybrid Cover and symmetric Magna A.I. Core. The RB 85 Cover is a new dynamic creation by our R & D team that will ensure you a proper read of the lanes. The Magna Core, with it's balanced dual-hemisphere design, will give you one of the most continuous and stable shapes available.
