Royal Collection Tour VS 4-PW Iron Set Expertly hand forged from soft S20C carbon steel The RC TourVS Irons features a two piece pocket cavity construction with USGA Conforming grooves. The Tour VS Forged Iron is crafted from premium S20C steel The Tour VS features a high MOI and a low center of gravity which gives a stronger more penetrating trajectory for stability and control. The Tour VSs extraordinary two piece pocket cavity construction features a cut channel slightly separated from and positioned behind and parallel to the entire clubface.