... 300g 3) 100% high modulus graphite 4) 70ra 100% Full carbon tennis racketModelNo. Tornado IHead size MP(645cm2/100sq.in.)Length 685mm ... fiber process using a special thermoplastic reaction process than ordinary carbon fiber strength, thus improving 18% , stability degree increasing 8%, ... performance.3, Frame made up of top Japanese Toray carbon fiber and resin, it enhances resistance to torsion and ...