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 1.30 mm gauge is slightly thicker than the 1.25, making it a more durable option. It's an iconic string, and the legendary Roger Federer uses this string as a hybrid with natural gut.