ALU Power Rough uses a textured surface to generate additional spin - ideal for baseliners looking to create power and spin with fast, full swings. Its dented surface also provides more string flex, which in turn delivers a slightly softer and more forgiving feel. Roger Federer uses this string as a hybrid with natural gut. Rougher version of ALU Power for enhanced spin potential Dented, textured surface provides more string flex Features same poly-ether-ether and aluminum formulation as ALU Power Often used as hybrid with natural gut string