Nike Slingshot Irons
The Slingshot irons' Slingback technology - a metal bar arcing from heel to toe - positions the CG low, rearward and in the heel of long irons to facilitate squaring the club head at impact and to create a higher ball flight for long, soft-landing shots.
Throughout the set, the flow weighting of the Slingback design shifts the CG incrementally higher, closer to the face, and towards the toe as it moves toward the short irons. This progression reduces the launch angle and increases the spin rate which helps prevent shots from ballooning while maintaining the ability to hold greens. The distance between the arcing Slingback and the center point on the back of the clubface is a constant six-tenths of an inch.