Product description one of the all time best selling ultra light designs the attack lite iron shafts offer a mid range torque and a mid trajectory ball flight the iron shafts are available in both parallel tip and taper tip options providing clubmakers with more fitting options flex weight butt dia tip dia ball flight length senior64g 600370high40regular66g 600370high40stiff68g 600370high40regular66g 600355high40stiff68g 600355high40