The Head Graphene Touch Instinct Adaptive tennis racquet comes stock with a 16×19 string pattern. This racquet goes one step further as to be almost completely customizable. Head has provided a tuning kit with this raquet so that, you can personalize the racquet’s specifications including the weight, length, balance, swingweight/power, string pattern, and balance. Head also used Kraibon into this frame improving shock absorption at ball impact. The tuning kit provided with the racquet makes the Head Graphene Touch Instinct MP a very versatile racquet for a varying range of players.