Only RocketBladez are powered by the Speed Pocket, the little thing that promotes radical increased speed and distance.  These irons are the true blend of the feel the pros demand and the explosive distance amateurs crave.  The Speed Pocket.  If you don't have it, then you don't have it.
 
The Speed Pocket has changed the iron forever.
Speed Pocket in the 3- through 7-irons works with an advanced, ultra-thin face design to
promote consistently high ball speed and distance.
 Consistent distance with every iron made possible by careful management of the Speed Pocket, improved Inverted Cone shape and high MOI.
 17.5 grams of weight is strategically redistributed to lower and center the CG location, promoting a higher launch angle, higher peak trajectory and a steep, soft-landing, quick-stopping descent angle.
Fantastic feel promoted by a specially formulated polyurethane developed by 3M that fills the RBZ Speed Pocket and quiets vibration.
SW and LW have re-designed cavities to promote feel, feature our renowned ATV sole for maximum greenside versatility, and come equipped with heavier steel shafts to promote better rhythm and control