The Hammer Four Density(4D) core consists of 4 individual components: the top flare ring, the top cap, the mid-body, and the lower cap. All four components are of different densities. The 4D core is placed in an offset position in relation to the centerline of the ball.
The Hammer Particle Technology(HPT) is the latest development in Active coverstocks. In HPT, millions of tiny particles are interspersed throughout the urethane, resulting in greater friction and more hook than today's reactive or conventional urethane covers.
| Overall Hook: | 20 (1-to-20 scale) |
| Track Flare: | 4" to 7" |
| Colour: | N/A |
| Coverstock: | HPT |
| Finish: | Action Blue w/Yellow Fill - Dull |
| Average RG: | Low |
| Length: | 7 (1-to-20 scale) |
| Backend: | 17 (1-to-20 scale) |
| Hardness: | 75-78 Durometer D-Scale |
| Lane Conditions: | Heavy-to-Medium Oil |
| Differential: | High |
| COEEFICIENT OF FRICTION: | High |
| Weights Available: | 12 - 16 lbs |
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