This leads to reduced muscle fatigue and recovery time as you spend less energy every swing. Most impressively, the technology - also used by NASA to maximise energy during flight does not affect the feel, flex and control brought by the braided graphite and basalt in the frame. Designed for attackers, the thin beam racket offers tremendous control, and parallel drilling makes a return to give Blade fans the response off the strings they love and expect. Being the only Blade with Spin Effect Technology, the 98S makes it easy getting the ball over the net with controlled shots. Weight Unstrung (+/- 5g)304.Beam Width20.6mm Flat Beam. Balance (+/- 5mm)325mm (Head Light). The item "Wilson Blade 98S Countervail 294g Brand New Serena Williams RRP £180 Grip 4" is in sale since Monday, November 5, 2018. This item is in the category "Sporting Goods\Tennis\Rackets". The seller is "dryce1" and is located in Ruislip. This item can be shipped to United Kingdom.