Roto Grip Bowling Balls. Since the dawn of the 21st Century no one can compete with the success that Roto Grip¦reg has had in the mid price category. The introduction of the all new HORIZONTM reinforces that truth by building upon the legacy that the RetroTM Line and the RSTM Series have established. Featuring the new HeliosTM weight block, this unique design delivers a lower RG and medium differential for consistent mid lane motion along with an angular move off the spot. The single density core guarantees a higher coefficient of restitution for increased hitting power, even on those off pocket hits!We have taken the best characteristics from our past and have created the outstanding True GripTM pearl reactive coverstock. It comes to you in a 1500 grit polish for added length and maximum energy retention at the break point on those medium patterns.The dawn of a new era is upon you, so jump on board or get run over!