Designed exclusively for Lund's Sport Track accessory rail mount system, the Extreme Max Quick Release Slider Base provides an excellent mounting point for your boat's electronics, including fishfinders, depthfinders, sonar, and more! The base's quick release mounting system attaches to your boat's Sport Track system without the need for tools or knobs, simply insert the mounting into the track, rotate the quick release lever, and be on your way. The base's durable nylon construction provides the strength needed to support your accessories and offers great protection from the elements.