Solinco Tour Bite Diamond Rough 16 1.30 Tennis String Packages : Serve your spin with the Solinco Tour Bite Diamond Rough 16 1.30! This versatile polyester string features a new Diamond Rough texturing process to provide extra power and bite on the ball. Its high-powered polyester construction allows for superior ball pocketing and playability. If you want to win with spin, try the Solinco Tour Bite Diamond Rough 16 1.30!