Best suited to keen beginners or senior players with a shorter slower swing the prokennex ki 30 255 tennis racket is powerful and forgiving and features an oversized 115in2 740cm2 head ensuring a large sweet spot head heavy balanced the racket provides more power and stability and comes strung with cobra 125mm string in a 16x19 string pattern for extra spin potential the use of kinetic technology results in improved shock absorption and a reduction in torsional rotation whereas spiral t