Description: 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. Specifications: Product Name: Luxilon Big Banger ALU Power Rough 130 16 Colors: Silver Gauge: 16/(1.30mm) 17/(1.25mm) Length: 40 Composition: Co-polymer Aluminum Fibers Type: Polyester Sport: Tennis