Intent
Our goal was to expand the Shield™ line and complement the Dark Star™, Riot™ and Mars™.
With products built on the premise of value and performance, the Shield line offers an array of choices, each with a distinct ball motion. From medium-dry lane conditions to medium-heavy, there is a ball in the Shield line that fits your needs.
The modern bowling environment can produce violent ball reactions with even mild reactive coverstocks like Sure Grip II™. Often we have high friction lane surfaces, short oil patterns and squeaky clean backends. While the Mars is a terrific choice for medium-dry conditions, power players and traditionalists alike demand even MORE control and predictability.
Control the uncontrollable with our new Grenade!
Design
At Roto Grip® we pride ourselves in providing a complete line of bowling balls in both value and performance.
With a medium RG (2.58) and medium differential (.040), the Photon ™ core utilized in both the newly released Riot and Dark Star, is the perfect foundation for the new Grenade.
You know that the coverstock is critical to ball motion, so even when testing on a shorter oil pattern, even a milder version of Sure Grip II with the Photon core was too much. We decided to step it down a notch and go 'Old School' with the new Retrothane™ shell because predictable ball reaction never goes out of style!
The Retrothane is a traditional urethane coverstock that will help you tame even the most scorching lane conditions. As witnessed on the PBA Tour and in World Championship events, urethane is still effective today. Redefine your arsenal with the new Grenade and know that no matter what they throw at you, Roto Grip has you covered.
Roto Grip – we're pulling the pin, tossing the Grenade and shaking it up.
