The Omen is the world's first golf ball with a metal core. Its patented hollow metal core design implements the same principles as hollow metal heads on drivers to produce high moment of inertia that allows the Omen to perform better than conventional golf balls.
The propriety hollow metal core of the Omen provides a structural foundation for the ball. By transferring the weight of the ball from the center to the perimeter of the core, the amount of sidespin is reduced, subsequently reducing hooking and slicing. The perimeter-weighting also causes the ball to track more straightly on the green. Think of a spinning figure skater. When she extends her arms outward, her weight is shifted away from the center and the rate of spin decreases. Basically, using the Omen means straighter shots.
The Omen traces its origins to a company called NanoDynamics, which specialized in nanotechnology, advanced materials, and things decidedly unrelated to golf. Doug Dufaux, an NanoDynamics engineer invented the ball that would become the Omen, and in 2005 the company began selling the ball as the NDMX ball. In 2009, NanoDynamics went under, and shortly thereafter OnCore Golf was born and picked up where NanoDynamics left off.
Tim Moore