The Callaway MD5 JAW Wedges  is constructed from 8620 mild carbon steel and the Center of Gravity of the wedges is precisely placed to create a soft, yet substantial feel. This innovative technology works with extremely sharp radius edges which combine with groove-in-groove technology for exceptional spin control. JAWS grooves impart more spin than any other in golf, allowing you to aggressively attack the flag with precision control. To ensure a seamless transition into your iron set each wedge is shaped to progress. A traditionally shaped lob to sand wedge, and more compact design in the gap through to pitching wedge, with a high-end Platinum Chrome finish for quality and superiority from every angle.