Power Level 975 Headsize 100 sq in Weight 10.8oz/305g unstrung Balance 12.6in/32cm, Head Light Length 27.0" Cross Section 23-24-22mm String Pattern 16 x 19 Swing Weight 295 String Syn Gut w/ Duraflex 16 Grip DuraPro+ * The O3 Speedport Black provides advanced level players more feel in an aerodynamic mid-wide frame. * Choose the String Port Insert for a softer feel with improved string damping. Or, for a firmer feel with increased string feedback, choose the String Hole Insert. * Fine-tune the feel of your racquet with the Speedport Tuning System (STS) - an exclusive Prince innovation which allows players to match the sound and feel of the racquet to their playing style and preference. * O3 engineered racquets are created through a one step fusion process that utilizes the strongest structure known to man, the Arch, creating the frame?s O-Ports. These O-Ports stabilize the racquet giving you more control on off-center shots.