Luxilon Big Banger ALU Power 16L Silver 720' reel is a playable tennis string designed for players who want more durability with amazing power and control and a rough texture for extra bite on the ball for superior spin potential. If you're looking for increased spin potential then you'll love playing with this string. It features spin-enhancing attributes of polyester so you can achieve maximum spin and durability. All Big Banger Strings: Give more power. Are very durable. Show no loss of efficiency. Don't move. Are impervious to atmospheric conditions. Durability: 8 Power: 10 Control: 10 Comfort: 9 It is recommended by Luxilon that you string Big Banger strings at least with 10% less tension than your usual strings.