The story of the new Callaway MD4 wedges is all about spin. Roger Cleveland has worked hard over the past few years to develop his best wedge yet. The new MD4’s feature Groove-in-Groove technology, which is the greatest assortment of groove varieties ever put into one wedge. There are grooves on the face as well as grooves in the grooves. These clubs are offered in 4 different sole designs to benefit every type of golfer. Lofts range from 50 – 64 degrees and there are two different finishes, chrome and black.