Drill-Free or Drill option. High Performance Hydrofoils streamlined for speed. The SE Sport will improve handling and provide better maneuverability with a smoother ride. Features Turbo Trac to enhance thrust and control. Crescent shaped surface quickly funnels water for more thrust-cutting planing time for the quickest hole shot. Cuts planing time dramatically and keeps the boat on plane at lower speeds while saving on fuel and providing better stability. Features high strength copolymer construction. Stainless steel hardware included. All hydrofoils and the Sport Clip are 100% molded, crafted, and made in USA.. Reduces or eliminates porpoising, cavitation, chine walking and deep-V wander. Sleek shape complements today's new boat designs. Silver trim covers all securing hardware. Manufacturer's lifetime warranty. Recommended for outboards and sterndrives 40 to unlimited horse power. Exclusion: Volvos with the exhaust through the cavitation plate. For these sterndrives we recommend the