Drive home strikes with the Hammer Spike bowling ball!
The Spike features Hammer's High RG High Differential Nasty core paired with a hybrid version of the Taboo Jet Black coverstock to provide the most controllably aggressive backend reaction on medium/dry lanes.
Here's what Hammer has to say about the Spike Black/Gold:
The Spike uses a high RG, high Differential core system that gives Hammer bowlers a new look at conquering drier lanes. Combined with the new carbon fiber outer core this ball is unstoppable. With our new technology we include a new 3-year warranty.