This racket has been used exactly twice. Simply can't get used to head shape. My loss is your gain. Grip size: 4 1/4String: Volkl Cyclone 16g at 52lbs. With this version of the Extreme Pro, Head delivers a powerful weapon loaded with spin potential. With its near 12 ounce weight and whippy head light balance, this stick is perfect for stronger players who want decent stability without sacrificing speed. Head updates this racquet with the 2nd generation of Graphene (called Graphene XT), which is an ultra strong yet light substance that enables a more optimal redistribution of weight to the handle and tip. The result is a racquet that comes around fast and offers plenty of pop.