Adams Golf Speedline F11 Fairway Wood Technology you can see, power you can feel. Velocity Slot Technology increases the spring-like effect for up to 12 more yards and improve forgiveness by 21% across the face. The result is a dramatically easy to hit fairway wood with increased ball speeds on the center hits, and up to 12 more yards more distance. Breakthrough patent-pending Velocity Slot Technology. Easy to hit performance, more ball speed, more forgiveness. 21% improvement in forgiveness across the entire face. Up to 12 more yards more distance.