The Acer XDS driver is designed for the vast majority of golfers to experience a distance-enhancing draw off the tee. Features internal heel-weighting which shifts the center of gravity closer to the hosel, assists squaring the face up at impact and enhancing gear effect to impart draw spin. Coupled with the lighter crown and increased head mass ensures greater energy transfer to the ball as well as optimal forgiveness. Additional screw weights available to fine-tune swingweight and/or assembly lengths. Comes with stock 7g screw.