SPEED DIAL;This speed slider is magneticallyattached to a 5-setting dial on the Speed Stik’sshaft; The dial’s 5settings correlate to swing speed, so the higher the number, the more speed is required to move the Speed Slider; It works for a huge range of swings –from below 80 MPH to a tour-level 110-plus; Crank the dial higher to force yourself to swing faster in order to release the slider.