Practical tennis string for tennis players with fast swings Tennis depends on many factors such as the optimal tennis string. Get the handy MSV Focus-HEX string for your next game. You should replace your strings immediately as soon as they are no longer optimal. The MSV Focus-HEX with its hexagonal profile is designed specifically for fast impact movements. The new string patters gives you even more control over the game. Equip yourself now with the MSV Focus-HEX and benefit from the good features in the next game. Highlights: Designed for players with fast shots With high spin potential More control over the game Made of high performance co-polyester This tennis string has been repeatedly voted String of the Year at the String Forum