The Vevor rail mill guide system is designed to help make long, straight, consistent cuts on large logs with a chainsaw mill setup. Its adjustable 12' rail and four movable crossbars clamp securely to different log sizes for smooth horizontal milling. Built from aluminum alloy and carbon steel, it is made for durability, stability, and reliable field or home use. Two included wedges help reduce blade binding for steadier cutting performance. It is suitable for builders and woodworkers working with cedar, walnut, oak, and other hardwood logs.