With the new JAWS MD5 Wedge, Callaway engineers, led by Chief Wedge Designer Roger Cleveland, took a three-pronged approach to promote consistently high spin. 1) New JAWS groove design2) Groove-in-Groove technology3) A variety of new and revised grind options for better turf interaction.NEW JAWS GROOVE DESIGNThe new JAWS groove design features groove walls angled at 37° with a tighter edge radius to promote consistently higher spin for precise control. This is a dramatic change from any previous Callaway groove designs.Every wall, surface and edge of each groove is milled into the face using a proprietary horizontal-milled, saw-cut process with a proprietary saw-cutter oriented to mill the groove with exacting precision. The bit is...