Hammer Raw Hammer Bowling Ball - Black/Grey Color: Black/Grey Coverstock: Juiced Solid Weight Block: Raw Hammer Core Factory Finish: 500, 1500, 3000 Siaair Micro Pad Radius of Gyration (RG): 16lbs - 2.543; 15lbs - 2.537; 14lbs - 2.554 Differential (Diff): 16lbs - 0.033; 15lbs - 0.038; 14lbs - 0.038 Intermediate Differential (Diff): N/A Fragrance: N/A Additional product information: Hammer has never believed entry-level should mean ordinary. The Raw Hammer line was created to deliver true Hammer performance while giving bowlers meaningful options, whether it’s their first Hammer purchase or a strategic addition for an experienced Hammer fan. This season, we are excited to release two new balls to the Raw Hammer line, a replacement for the popular Black Solid and a Red/White/Purple pearl. The Black/Grey Solid offers great traction for the price point, and the Red/White/Purple Pearl provides length and strong down-lane motion. Together, they carry on the Raw Hammer legacy of versatility, consistency, and performance for bowlers of all skill levels.