The Callaway graphite iron shaft in the X 20 irons from 2006 was a proprietary Callaway branded shaft. The shaft weight was 71 to 80 grams, depending on the flex, and came in Lite, R and S flex. We identified the MPF (Maltby Playability Factor) rating for the shafts as being 2D3S for the Lite flex, 3B3M for the R flex and 4B2M for the S flex. These codes can help identify similar playability shafts in The Golfworks catalog or on the webiste. The original shaft that was in the X20 irons is not available.
Date published: 2014-10-20