The key to theÃÃàReign of FireÃÃàis the utilization of the R2S solid reactive coverstock. From its inception, it has proven to beÃÃàone of the most versatile coverstocks ever manufactured. With its strong surface profile and excellent friction characteristics, it was the obvious choice for this latest release.ÃÃàThe fuel for the Fire, so to speak, is the C.A.M. (Continuous Axis Migration) weight block. The combination of the unique contours along the weight block with the strategically placed weighted mass blocks deliver optimum mid-lane roll with volatile backend reaction.