FEATURES The Ball of Steel is 5X heavier that a standard golf ball. It has no energy, so you have to create it to roll the ball. A decelerating stroke will not cause the ball to roll properly. Mis-Hits Putts hit on the toe or heel, high or low on the face & the heavy ball will let you know immediately. Double hit a few times. You learn quickly to carry your momentum through the ball & to hit a solid putt. Flip the putter head and the ball will barely move. Make a solid stroke with the shoulders, arms and hands connected, and it rolls perfectly. Return to a standard ball and feel instantly your new, compact solid stroke. Silicon cover protects your putter. Focus on a solid hit - With a solid stroke, it takes away other thoughts about distance, target, or method. This focus translates into much quicker improvement!