The narrow streamline shape of the SE Sport Hydrofoil provides quick, precise control. The unique design eliminates the downturned trailing edge and cupped underside so there's no drag. Patented Turbo Trac's crescent shape and control tips produce improved thrust for quick plane at lower speeds, you'll experience great control and fuel savings even when towing skiers, tubes, and boards. Mounting hardware included. 13.5" x 14.3".Application Notes: Recommended for 8 to 40 HP engines. Will fit larger HP, except Mercury 40, 50, 60 4-strokes. Drill-free installation with the optional Sport Clip. Mounting hardware included Fits 8 HP - 40 HP engines | 200 Hydrofoil, Fits 8 HP - 40 HP Engines in Black