BowlersDeals.comThe Hook series offers big time performance at entry level cost. The S43 shell (solid or pearl) provides bowlers with an option when selecting the coverstock which best matches their individual game and the condition they are bowling on. The Hook Blue/Blue offers the most traction out of the box with a 4,000 grit Abralon finish. Both the Red/Yellow solid and Orange/Purple Pearl come with a 2,000 grit polished finish. The Red/Yellow solid is smoother off the spot, whereas the Purple/Orange Pearl will create a slightly sharper move at the breakpoint.The High Rg -- Medium Differential performance core has been engineered to power the ball through the heads with ease, and generate a predictable strong hooking motion for all skill levels.