"OT Iron shafts turn traditional graphite iron shaft construction and technology techniques totally on their head. Instead of using layers of sheet-wrapped prepreg, OT irons braid individual strands of carbon fiber that are then impregnated with resin. This eliminates many of the imperfections that arise with traditional sheet wrapped prepreg. This proprietary and totally symmetrical construction technique enables the golfer to more regularly hit launch windows as the shaft loads and deflects more consistently through impact.Who should play it? Golfers in search of the most possible consistency in their iron play should look for OT.スペックSHAFTFLEXLENGTHWEIGHT/GMSTIP ODTIP LENGTHBUTT ODTORQUEKICK POINTOT Iron 75R39.5""750.3704.70.5983.2MIDOT Iron 75S39.5""800.3704.70.6043.1MIDOT Iron 85R39.5""840.3704.70.5983MIDOT Iron 85S39.5""900.3704.70.6083MIDOT Iron 95R39.5""910.3704.70.5982.9MIDOT Iron 95S39.5""970.3704.70.6082.9MIDOT Iron 105S39.5""1050.3704.70.6022.8MIDOT Iron 105X39.5""1090.3704.70.6082.7MID"