The Callaway RAZR X NG irons use RAZR technology to make these irons easier to hit for the mid- to high-handicapper. The Center of Gravity is placed lower in order to increase the initial launch angle, allowing balls to get airborne faster. This also moves the sweet spot lower on the face where most average players tend to miss on iron shots. The thin face helps you make the most of that high launch by increasing ball speeds for greater distance across the majority of the clubface. To make these irons work for even more golfers the set is available with hybrids to replace difficult to hit long irons.