Makes removing your Minn Kota trolling motor a breeze! Made of high-yield composite construction that's impervious to corrosion. Low-profile design leaves the deck clear when the motor is removed. Bracket locks in over top of deck-mounted center puck. ,,,, MKA-21: fits all Minn Kota Power Drive, Auto-Pilot, Riptide Power Drive, and Riptide Auto-Pilot motors. ,,,, MKA-23: fits all Minn Kota All Terrain, Edge, Maxxum Pro, and Riptide scissor-mount trolling motors. ,,,, RTA-17: fits Minn Kota Riptide Power Drive/AP motors. ,,,, RTA-19: fits Minn Kota Riptide bow mount motors.