The VECTOR SERIES represented a high-tech departure from traditional bowling ball design. Because of the unique positioning of the weight blocks within the famous Columbia core, the VECTOR ONE and the VECTOR TWO produce a marked increase in the number of revolutions completed as the ball travels toward the pins. The end result is a level of control, predictable action and overall striking force like no other bowling ball. In the VECTOR one the weight block is positioned midway between the cover and the geometric duration and heavy roll. Ideal for the high-track player when the pines and back ends are oily.