This Signum Pro Hyperion 1.18 200m is designed for greater durability and directional control for hard hitters. It has a 1.18 mm caliber to add game feel and even more effects. The Signum Pro Hyperion 1.18 Reel offers greater spin potential than its thicker 1.30 version. This string brings the popular Poly Plasma string to an all-new level. The co-polyester structure results in greater elasticity for enhanced comfort and power. Hyperion is designed for greater durability and directional control for hard hitters. The molecular structure of this string improves the tension maintenance for longer lasting playability.