4040 T Linear Rail European Standard: Our aluminum extrusion rail includes 4 aluminum alloy rails (23.62 in / 600 mm each)everything you need for easy setup! Built to Last: The anodized linear rail is made from durable 6063-T5 aluminum alloy with an anodized finish for excellent corrosion resistance. Whether it's humid or dry, these rails are designed to stand the test of time. Smooth and Precise: Cut with high precision for smooth, burr-free surfaces. This means less friction, smoother operation, and more reliable performance. Youll notice the difference in both efficiency and lower maintenance costs. Easy to Customize: The side groove design works with M6, M8 T-slot nuts, pulleys, and moremaking assembly a breeze. Ideal for your DIY projects and fast builds. Versatile for Any Project: Lightweight and flexible, these linear rails can be used in a variety of projects without the need for welding