Sonartec SS 1.5 Fairway wood. The SS 1.5 was originally designed as a PGA Tour-only model, the SS-1.5 fairway metal has been released for the public New internal rear-weight distribution produces a mid-low launch angle. The Driving Cavity on the sole allows for greater distance and control and a better balance weight distribution across the face of the club, resulting in more stability on heel/toe miss-hits and a wider sweet spot. Deeper Centre of Gravity (CG) creates a penetrating ball flight with no balloon effect making the ball less apt to be affected by the wind.