Glide 20 wedgesgrooves you can count onnew sharper edged grooves are spaced closer together for increased friction imparting more spin up to 400 rpm in testing for precise distance and trajectory control from full swings and finesse shots the enhanced sole grinds and lead edges in the 431ss heads have been carefully crafted for exceptional surface interaction and versatility gliding through the turf and sand to enable creativity in shot makingan extremely precise wheel cut milling proce