Callaway Golf FT i-brid Individual Iron with Graphite Shaft An evolution of the original Fusion Irons, the 2008 FTs are a product of Callaway Golf's innovative weight-shifting science - Fusion Technology. Multi-material construction allows for premium performance. Heavy Tunite weighting in the sole has been concentrated more toward the heel and toe for a higher MOI (moment of inertia) and better stability while keeping the CG (center of gravity) low and deep. The lightweight titanium body allows for an oversize clubhead with increased offset for greater forgiveness and an increased effective hitting area and the TPU SenSert decreases vibration, creating an incredibly solid feel. Callaway FT i-brids blend the control and accuracy of irons with the forgiveness, distance and versatility of hybrids. Their low, deep CG helps get the ball in the air quickly and easily, while the wide sole helps improve turf interaction. The game-improvement mid and short irons are the ultimate