Mizuno mp h5 irons in steel or graphite option over 20 shaft and grip options plus length and lie options all included in our price proper free custom fitting hollow flow construction the lsquohollow flowrsquo concept is a response to the demands of modern golf courses ndash with longer approaches to tighter pin positions on firm greens tour players looking for more vertical landing angles have instigated the move into forgiving equipment tailored to suit a more critical eye