The Wilson Hyper Hammer 5.3 Oversized Tennis Racquet is a great choice for beginners in search of easy power. The 110 square inch head size offers a generous sweet spot, this allows beginners the ability to make clean contact even when timing is less than perfect. The Hyper Hammer 5.3 is very lightweight and comfortable, perfect for recreational players looking for easy progression. The Wilson Hyper Hammer 5.3 offers beginning players a large and forgiving sweet spot in a lightweight frame. This racquet comes pre-strung. Grip Size: 1-5 Grip Size: 1-5 Head Size: 110 in sq. / 709.68 cm sq. Weight Strung: 9oz / 255g Length: 27.5in / 69.85cm Balance Strung: 14.8in / 37.59cm / 8 pts HH Cross Section: 28mm / 25mm / 25mm String Pattern: 16x20 Flexibility: 70 Composition: 85% Graphite / 15% Hyper Carbon Power Level: Medium-High Stroke Style: Short-Medium Swing Speed: Slow-Medium Grip Type: Cushion Aire Conform Grip Racquet Color: Black/White/Gold String Tension: 55-65 Model Number: WRT58610U