Maximum spin control from most any lie is the idea behind the latest of the new RTX 6 ZipCore wedges. Grooves have the sharpest radii Cleveland has ever made with a tighter pattern and loft-dependent laser etched patterns between. This, the sixth version of ZipCore, extends the hollow portion of the hosel and heel filled with low density material moving the center of gravity towards the toe. $170 with a Tour Satin finish.