High performance hydrofoil from SE Sport is streamlined for speed, improved handling, and better maneuverability. Turbo Trac enhances thrust and control, while crescent-shaped surface quickly funnels water for more planing time and the quickest hole shot. The 400 hydrofoil saves fuel costs and reduces the problem of porpoising and prop ventilation. Features one-piece copolymer construction. 16" x 17".Application Notes: Recommended for all outboards and sterndrives over 40 HP. Optional drill and drill-free stainless steel hardware are included. Proven Disk Grips hardware for the drill-free attachment will not mar or screw into your motor. Does not require the Sport Clip for drill-free installation. Delivers quick hole shot Saves fuel costs For engines over 40 HP | 400 No-Drill Hydrofoil, Fits Engines Over 40 HP in Black