Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer Black. Molded in two pieces of guaranteed unbreakable high-strength plastic each foil is designed to flex independently to absorb shock. The positive effects include greater stability consistent planing at lower RPM faster out-of-the hole performance better gas mileage steadier turns higher top-end speeds and lower bow rise at all speeds. Doel-Fin is designed for use with small motors big motors and inflatable dingies. Specifications for Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer: Manufacturer: Davis Instruments Color: Black Features of Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer: Increase performance and safety Increases fuel efficiency and reduce bow rise Promotes fast out-of-the-hole times Designed by an aeronautical engineer Doel Fin is a true hydrofoil Simple 15-minute installation hardware included Eliminates porpoising and directs prop thrust for increased performance Package Contents: Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer Davis Instruments 440: Doel-Fin Outboard/Outdrive Stabilizer Black