Nike Golf SasQuatch Sumo Squared Individual Iron with Steel Shaft New clubhead geometry and vibration dampening inserts bring amazing feel to the SasQuatch Sumo Squared irons. Features: SQ Sumo Squared Iron Geometry - The Sasquatch Sumo Squared iron has a longer blade length, wider sole and lower profile than the Sasquatch Sumo iron for increased stability and lower CG (center of gravity) TPU Insert - The TPU insert dampens unwanted vibrations at impact for that pure feel Nike PowerBow Weighting - The Nike PowerBow design shifts weight strategically to place the CG to increase MOI (moment of inertia) and create a more stable club at impact