HEAD Ti Radical Elite Strung Tennis Racquet The adult racquet, which comes with a cover, has Titanium Technology and graphite composite construction for superior performance. The head has Extreme Grid for more stability and larger sweetspot. The Contour Cushion grip gives you the maximum cushioning and provides extra comfort. The unique contoured grip shape makes it easy to find the proper grip, which improves handling and prevents slippage. The grip size is 4 1/2".