Product Description
The Roto Grip Cosmos Polyester is a straight‑shooting spare ball built for bowlers who want a simple, reliable option for shooting corner pins and playing direct angles. Featuring a traditional 3‑piece core construction, Cosmos is engineered for maximum stability and minimal flare, helping it hold its line and go straight even when lane conditions are changing. Wrapped in an ultra‑durable, high‑gloss polyester shell, this ball resists track wear, handles frequent use, and glides cleanly through the front part of the lane for predictable spare‑shooting performance
Color: Sky/Admiral/Teal *Please note that colors may slightly vary from image shown
Coverstock: Polyester
Weight Block: Traditional 3-Piece Core
Factory Finish: 35000 Grit Factory Finish Polish
Flare Potential: 1" (Low)
Radius of Gyration (RG): 2.69 (15 lbs)
Differential (Diff): 0.006 (15 lbs)
Intermediate Differential (Mass Bias): 0.000 (15 lbs)
Roto Grip Cosmos Bowling Ball FAQ
Q: Who is the Roto Grip Cosmos Polyester designed for?
A: Cosmos is designed for bowlers who want a dedicated spare ball or a straight‑line option—league players who shoot lots of corner pins and newer bowlers learning to throw straight without worrying about hook.
Q: What kind of motion should I expect from Cosmos?
A: With its high‑RG, low‑differential 3‑piece core and polyester cover, Cosmos is built to go straight with minimal hook, even on typical house conditions or when reactive equipment is starting to read early.
Q: Is Cosmos suitable as a strike ball?
A: Most experienced bowlers will use Cosmos as a spare ball, but newer or very high‑rev players can use it as a strike ball when they want to focus on accuracy and learning fundamentals with very little hook.
Q: How durable is the Cosmos polyester shell?
A: The cover is described as ultra‑durable and high‑gloss, built to withstand frequent use and ball return wear, making it ideal for spare‑ball duty across many seasons.
Q: How does Cosmos differ from reactive or urethane balls?
A: Reactive and urethane covers absorb oil and create friction for hook; Cosmos’s polyester shell is much less responsive to friction, resulting in a straighter path and far lower hook potential, which is exactly what you want for spares.
Q: Does this ball come with a warranty?
A: Yes, Cosmos features a one year limited warranty from the date of purchase.
