Head Tennis Racquets utilize specific technology for large sweet spots, maximum control, and amazing comfort. Andre Agassi uses head tennis racket’s Liquidmetal weapon. Head Tennis Racquets have been around for decades. After so many years, head tennis racquets offer many styles, including: Head AirFlow CrossBow, Head CrossBow, Head Liquidmetal, Head Flexpoint, Head MicroGel and Head YouTek. Head Tennis Racquets new technology offers greater flexibility and playability.