Dunlop force 105 tennis racket the dunlop dorce 105 tennis racket has the biggest head in the force series which results in more power and a larger sweet spot dunlop force unstrung weight 285g headsize 105 sq inch beam width 24 26 24 mm string pattern 16 x 19 unstrung balance 320mm string tension 52 62 lbs 23 28 kg length 2725 inch whiteblack l1