Stable & Sturdy: 9 ft mill guide boasts a robust and durable framework, secured by the connection of anti-loosening nuts and large washers. Four cross-beams have been added for better reinforcement, ensuring smooth and stable sliding of your chainsaw and creating a fast and stable cutting. Industrial-grade Material: Our rail mill guide is made of high-quality aluminum and iron materials, highly wear-resistant and rust-resistant. It is lightweight and comes with an accessories storage bag, making it easy to carry for all your woodworking needs. Easy to Install and Operate: Assemble the chainsaw mill rail guide in just 4 simple steps, with detailed installation accessories and assembly instructions. Fix the nails on the wood and level it with the internal hexagon, then connect the electric chainsaw and cut out flat boards