Scotty 1511" Ball Mount with Gear Head and Track Boat Accessory - The Scotty Ball Mounting System with Gear Head and Low Profile Track provides a mounting receptacle for a variety of Scotty post mount accessories. The Gear Head's effortless drop and lock system allows the user to secure and re-position post mount accessories with just a twist. The 151 comes with 440 Low Profile Track that allows for quick and easy set up; The ball joint design of the 151 enables a smooth, full range of motion; Made from corrosion proof construction, this system provides a long service life in both fresh and salt water applications;