The Vevor 2040 T-slot aluminum extrusion linear rail set includes 5 anodized 6063-T5 aluminum alloy rails designed for smooth, precise motion and durable long-term use. Each rail measures 59.06" long and features a European standard 2040 profile for compatibility with M4, M5, and M6 T-slot nuts. The lightweight yet high-strength construction makes these rails suitable for 3D printers, CNC machines, laser engraving setups, automation equipment, workbenches, and furniture projects. Precision cutting and burr-free surfaces help reduce friction and support reliable operation. This modular rail set is built for easy customization and flexible DIY assembly.