At 170 grams, the Graphene 360+ RADICAL 170 is designed for those who look for power. It is slightly heavier than the 160 version and comes more evenly balanced, which means that it packs a lot of power in an extremely maneuverable design. It features the new Graphene 360+ technology, a combination of Graphene 360s energy transfer and innovative spiralfibers for an enhanced flex and clean impact feel. In addition, it comes with HEADs Inner Grommet System for optimal stiffness and a solid feel. We also lengthened the main strings by creating molded tubes in the throat of the racquet. These Power Channelsa? increase the stiffness in the throat for an incredible amount of raw power. While used by top pro players, the RADICAL 170 brings state-of-the-art power to the masses.