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🛠️ Build Bold, Build Black — Elevate Your DIY Game
This 4-piece set of 4040 T-slot aluminum extrusion profiles features high-strength 6063-T5 European standard material with a smooth anodized black finish. Each 500mm rail offers a precise 40x40mm square profile compatible with all Series 40 fasteners, ideal for professional 3D printers, CNC machines, and versatile DIY projects. Highly rated and industrial-grade, these rails combine durability, modularity, and sleek aesthetics to empower your next build.


















| ASIN | B09MWCL2WH |
| Best Sellers Rank | #14,968 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Linear Motion Guides |
| Brand | IXGNIJ |
| Brand Name | IXGNIJ |
| Color | Black |
| Customer Reviews | 4.8 out of 5 stars 148 Reviews |
| Grade Rating | Industrial |
| Item Shape | Square |
| Item Thickness | 40 Millimeters |
| Manufacturer | IXGNIJ |
| Material | Aluminum |
| Model Number | AT21124040 |
| Number of Items | 4 |
| Part Number | AT21124040 |
| Shape | Square |
| Specification Met | True |
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