The Roto Grip Perfect Gem brings the GEM series into a new generation with a revised GEM + A.I. Core Technology weight block. Adjusted core density helps the ball move through the front of the lane while maintaining the powerful, continuous motion that defines the GEM line.
The new E-R1 Solid Reactive coverstock uses a nano-free formula designed to balance traction with a strong response to friction. Its 2000-Grit Abralon factory finish provides the surface needed for medium-heavy to heavy oil while helping preserve energy for the backend. Bowlers looking for a strong asymmetric solid with a cleaner trip through the heads will find a versatile addition to their bag.
- GEM + A.I. asymmetric core technology
- E-R1 Solid Reactive coverstock with a 2000-Grit Abralon finish
- High flare potential for medium-heavy to heavy oil
- Pink / Rose / Onyx colorway; available in 12-16 lb
Roto Grip Perfect Gem Bowling Ball - GEM A.I. Core, E-R1 Solid
Lane Condition: Medium to Heavy Oil
Coverstock: E-R1 Solid Reactive
Core: GEM + A.I. Core Technology
Finish: 2000-Grit Abralon
