Track continues the popular Kinetic series in the Track Kinetic Ruby. This ball features the modified Kinetic core which has a low RG, medium differential, and low mass bias. These components allow this ball to save its energy longer but use it quicker. Track has combined this core with the QR-6 Solid coverstock which produces a strong down lane motion. Due to the angular characteristics of this ball it is a good match for heavier or longer oil patterns. This mid performance ball with a mid performance price and an asymmetric core is hard to beat.