StingRay Airo Hydrofoils suitable for any type of boat, from the inflatable boat outboard, to that of a pleasure and fishing boat, up to a motorboat sterndrive. Made of hydrophilic waterproof material that does not produce friction. Mounted in two pieces with 4 holes on the cavitation plate.↵ ↵-Save money by saving fuel↵-Get on plane in half the time↵-Keep the boat on plane with much less engine RPMs-Stabilize the boat↵-Reduce chinewalking, cavitation and ventilation