Diadem Pro X Tennis String Set ? 40ft Silver Hexagonal Co-Poly for Maximum Power and Spin Engineered for aggressive baseliners and advanced players, the Diadem Pro X Tennis String Set delivers explosive power and firm response for ultimate control. Designed in collaboration with professional athletes, Pro X is Diadem?s firmest and most powerful poly string, featuring a sharp hexagonal cross-section that grips the ball for intense spin and precision. This 40-foot set is ideal for full string jobs or hybrid setups and is available in multiple gauges to match your playstyle. Whether you want spin, stability, or stiffer feedback on every shot, Pro X is the competitive edge your game demands. Key Features: Maximum Power: Diadem?s firmest poly string for explosive response off the string bed Hexagonal Profile: Sharp-edged shape enhances spin and ball bite Pro-Tested Performance: Developed with the input of current pro players Reliable Durability: Maintains performance under intense hitting Ideal for Hybrid or Full Bed: Offers versatility for string setups Specifications: Length: 40 feet / 12.2 meters Profile: Hexagonal Material: Co-polyester Available Gauges: 18 (1.15mm): Best feel 17 (1.20mm) 16L (1.25mm) 16 (1.30mm) 15L (1.35mm): Most durable Colors: Silver, Blue, Orange