From the Manufacturer
This panel saw system includes a tracking fixture that attaches to your saw, plus a special fence designed to work with the fixture. The fixture mounts to the fence so that your saw will track exactly true to the fence when cutting. The tracking fixture has five heavy-duty sealed ball bearings in its point contacts with the fence to reduce friction. Therefore, guiding your saw becomes effortless, easy and extremely accurate. This panel saw system includes two new and improved 64-inch modular fence sections, and integrated clamps that assist you in cuts up to 116-inch. Some benefits are: cut up to 52-inch with each section, does not interfere with other saw functions, adapts to saws with 6-1/2-inch to 8-1/8-inch blades, requires little space, aluminum fence angle 1-1/2-inch-by-2-inch-by-3/16-inch, deflection 1/16-inch or less over 10-feet.