The all new Extended Ra Pearl Reactive Cover. This incredible new cover increases the Ra value, allowing the LevRG RESPONSE to deliver the most responsive and continuous ball reaction the industry has ever seen!Development ConceptTo produce a new coverstock with a larger Ra value to increase performance by providing increased lane surface contact. Use modified core densities to produce a later more responsive and continuous breakpoint.Coverstock NotesAll new formula designed to raise the Ra value of the cover thus providing improved contact between the ball and the lane surface. Although the Extended RA Pearl Reactive coverstock provides increased surface contact, the cover material is extremely workable and accepts sanding and polishing easily, allowing for breakpoint locations to occur sooner or later down the lane, depending upon the surface adjust made to the cover.Core NotesDensity adjustments within the EZ Rev body, hood, and lower cap made it possible to increase the RG value while reducing the asymmetrical and total differentials. This change helps to generate a more powerful rev rate down the lane, allowing for stronger changes of directions on the backend with increased continuation.Please note that due to color swirls during manufacturing, actual swirl patterns and concentrations may differ from this sample.Product Type Bowling Balls