Constructed for pelagic gamefish. The patent pending “Auto-Tune” free-moving line tie design is self-centering, automatically aligning the lure for consistent action at very high trolling speeds, up to 15 knots, with optimum action at 6 -10 knots. At 15 knots the minnow’s smooth swimming action allows the lure to be fished on lighter line, even with a light drag setting. Williamson Speed Pro Saltwater Diving Lure Features Heavy-Duty Oval Split Rings VMC® Heavy-Duty Perma Steel® Hooks Laser Cut Plate Hook Hangers AUTO-TUNE: Free-moving line tie design is self-centering, automatically aligning the lure for a consistent action.