The luxilon 4g 130 is the number 1 tennis string on pro tour it delivers maximum tension maintenance and excellent playability without compromising on legendary power and spin which makes it a perfect choice for aggressive players this co polyester string with a monofilament core should also meet the needs of those who look for enhanced durability and improved comfort it has a gauge of 16 130mm and is available in a 200m 660ft reel the string is made in belgium