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. This string contains the same material composition as the ALU Power collection, which provides top-quality control, feel, and comfort. The 1.25 mm gauge is slightly thinner than the 1.30, which generates enhanced feel and control on each shot. It's an iconic string, and the legendary Roger Federer uses this string as a hybrid with natural gut.