ALU Power Rough uses a textured surface to generate additional spin - ideal for baseliners looking to create power and spin with fast, full swingsIts dented surface also provides more string flex, which in turn delivers a slightly softer and more forgiving feelGauge-16L / 1.25mm; Length-40ft / 12.2m; String Material-Poly-Ether-Ether; String Type-Polyester