The Cobra AMP Cell irons are the perfect blend of pinpoint accuracy and explosive distance. They feature AMP Cell technology which re-distributes weight from the face and body to increase perimeter weighting and positions the center of gravity directly behind the sweet spot. Its sculpted V-Skid sole design improves turf interaction regardless of swing type resulting in improved contact from most any lie. E9 Face Technology and metalwood face-weld construction combine to create a higher COR for increased distance and forgiveness. The long irons (through the 7 iron) feature a 431 stainless steel body that is plasma-welded to a 17-4 stainless steel face, while the short irons (8 iron and shorter) are 431 stainless steel.