This Vevor aluminum extrusion linear rail set includes 10 European standard 2020 T-slot rails designed for precision DIY and machine-building applications. Made from 6063-T5 aluminum alloy with an anodized finish, the rails offer corrosion resistance, smooth surfaces, and durable long-term performance. Their lightweight yet rigid design makes them suitable for 3D printers, CNC machines, laser engraving setups, automation equipment, workbenches, and furniture builds. The side groove design supports multiple T-slot nut sizes for flexible assembly and customization. Hardware and cast aluminum connectors are included for convenient setup.