Nike SV (Spin Velocity) wedges. The Nike SV wedge combines a soft 8620 Carbon Steel head, which is 45% softer than 17-4 stainless steel providing superb feel on all shots. CNC milled face for more predictable distance and shot patterns. U/V scoring grooves grab the ball more aggressively than a V-groove resulting in a high spin rate. An additional benefit of the U/V grooves is their ability to remove more grass, dirt and water that a V-groove for solid contact with the ball. Fitted with a high quality True Temper Dynamic Gold steel shaft as standard. Each wedge comes as standard in stiff flex.