The callaway mack daddy pm grind wedges have been designed with a new look and new tour grinds this wedge has weight higher in the club due to the high toe design and weight taken from the back of the club to give you the ultimate performance wedge callaway designed by roger cleveland with phil mickelson input to produce a new wedgethe grooves go all the way to the toe in fact thirty nine percent more grooves the reason for this design is when you open the face of the club you naturally hit