Hammer continues the success of the Viral bowling balls with the Hammer Viral Hybrid. This version offers a stronger mid-lane reaction while keeping the consistent and predictable reaction of the previous Viral balls on dry to medium oil conditions. All of this is achieved by combining the Vibe core with the Violent Flip Hybrid coverstock and finishing it with a 500 grit and then 2000 grit Abralon pad and then Powerhouse Factory Finish Polish. This bowling ball is infused with Carbon Fiber! Hammer added this tough material to the inner core of this ball to add strength and durability so that they can offer an incredible 3 year warranty.