The Spike HPT, just as the Spike Reactive core is double tapered. Starting at the bottom and moving upward the core body opens as it gets to the center and then closes towards the top. A Flare Cap is added to the top of the upper core and gives the ball more Flare Potential.
The Spike HPT cover is the next generation of Hammer Particle Technology and is derived from adjusting the particle loading ratios from the 4D-HPT and the 4D-HPT Tour balls. The Matte Red cover grabs the lane surface even when the lane oil condition is medium to heavy. This lane grabbing effect creates friction, which results in hook.
Since the Spike HPT is a Particle ball it's best performance (hook and backend potential) will be on medium to heavy oil lane conditions. The heavy roll caused by the design of the Spike Core and the friction created by the particle cover do not stop when the ball hits oil. The new material formula does allow for alteration of the ball surface. The Spike HPT can be sanded or polished to adapt to specific lane conditions.
