HEAD RACKET MX Spark Tour Tennis Racket

The Spark tour tennis racquet is the most powerful model in the pre-strung SPARK series. With its energetic design, you will be inspired and ready to make things happen on the tennis court. Features: - Energetic design - Power for new players - Pre-strung Specifications: - Weight (unstrung): 275 g / 9.7 oz - String pattern: 16/19 - Head size: 645 cm² / 100 in² - Grip size: 0-5 - Balance: 330 mm / 0.5 in HL - Length: 685 mm / 27.0 in - Beam: 23 mm Technology: Arcore: - ARCORE Technology is a spefically designed cross section in the shaft of the racquet to increase torsional stability for ultimate control and power. Metallix™: - Specially formulated crystalline metal alloy with a grain size 1000 times smaller than that of a typical metal creates a much stronger material. The Hall-Petch Effect states: smaller grains = stronger material. The result is a lighter, stronger and more powerful racquet.