Product Specs Weight: 160g (unstrung)Racquet Length: 22 inFactory Grip: Hydrosorb Comfort BlackFactory String: Megablast 16gBalance Point: 280mmFrame Shape: TeardropStrung Surface: 106 sq in Description of the Racquet Head's Graphene Radical 160, 170, 180 series was the most successful Head launch since the original Liquid Metal’s 12 years ago and the new XT Radical series will be no different as these play incredible. Once again Head has the 160, 170, and 180 gram weights available. The 160 gram weight is designed for the player with the fast swing speed or the younger player and the 170 and 180 are for the slightly older player or a player that could use some extra weight to help get the racquet around. What else is new in the XT's? The technologies are explained below: Comfort Tech Grip Technology: Specially formulated PU material has been inlayed into the graphite handleCreates a softer grip and dampens vibration for more comfort and playability Adaptive Fan Pattern (AFP): AFP technology allows you to customize your string pattern to maximize your particular game style. With Head’s new bumper system technology you are able to choose between 16/16 (traditional & factory strung) or 12/16 (modified fan pattern) each time you string. 16/16 Traditional String Pattern – Designed for players with faster swing speeds that need maximum power while increasing precision and string durability12/16 Modified String Pattern – Designed for players with all swing speeds looking to maximize power. This modified fan pattern keeps the center ten mains the same as the 16/16 pattern but eliminates four of the outer main strings. This maintains the dense pattern in the sweet spot area while still lowering swing weight and increasing string deflection delivering incredible power and soft feel on every shot.