The Dewalt NA485079 Table Saw Rail provides a stable guide for positioning compatible table saw components. This replacement rail attaches to the saw and works with the fence or adjustment mechanism to maintain proper alignment during cutting. It allows connected components to move or remain positioned along the rail as required, supporting controlled cuts. A properly fitted rail maintains smooth adjustment and stable positioning. It can replace a bent, worn, or damaged rail during maintenance or repair. Replacing the component restores normal alignment and adjustment without replacing the complete table saw.