Wilson Big Banger Alu Power 125 String Set is contains luxilon's unique poly-ether-ether material which is durable in nature. ALU Power is the top string on tour for a reason - the aluminum present in the string enhances playability to go along with impressive power and control. Its unique poly-ether-ether composition exceeds all quality standards for near-zero string variance. Completely impervious to atmospheric conditions such as moisture, ALU Power delivers unrivaled consistent performance for championship-worthy results. Comes with 125 string set and silver in colour.