Building a frame, 3D printer, or custom structure? This 10-pack of black 2040 aluminum T-slot extrusion is super handy. Each piece is 1 meter long, with a 20mm by 40mm cross-section. Made by ZYLtech, these extrusions are anodized black, look sharp, and have those handy T-slots for attaching brackets, panels, or other parts with bolts. Perfect for DIY projects, robotics, workbenches, or enclosures. The pack gives you 10 meters total, so you can cut to size as needed. Sturdy, lightweight, and easy to assemble with the right connectors. Whether you're a maker, engineer, or just love building stuff, this aluminum profile is a versatile base material. Get creative and build something solid!