Prince O3 Silver OS Prestrung Tennis Racquet This racquet ships pre-strung This racquet includes a cover Power Level 1600 Headsize 118 sq in Weight 8.8oz/250g unstrung Balance 14.2in/36.0cm A TENNIS Magazine Editor's Choice Award winner. This racquet had the biggest and most powerful sweet spot in tennis when introduced Racquet Cover Included and Swing Weight 290 Length 27.75" Cross Section 27-30-27 mm String Pattern 16 x 19