Are you interested in Compact Callaway Apex Pro irons?
The Apex Pro heads are more compact than the standard Apex clubs, and have less offset, a thinner topline, a narrower sole, and a shorter blade length from heel to toe. Callaway engineers discovered that tour players and better amateurs were often generating too much spin out of the rough, largely because of high clubhead speed, reducing both distance and consistency. To remedy this, they came up with a new wide-spaced groove.
The soles of the long irons (2-5) have tungsten inserts to lower the Center of Gravity, which produces a higher launch angle and makes easier to hit. The Center of Gravity gets progressively higher down the set from longer to shorter irons. In the 9-iron and pitching wedge, this higher CG helps flight the ball down a bit and deliver a flatter trajectory.