VEVOR 4PCS 4040 Aluminum Extrusion Profile, 78.74 Inch 2000 mm, T Slot European Standard Anodized Linear Rail, High-Strength Extruded Aluminum Rail, for 3D Printer Parts and CNC DIY Workbench, Black
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Slot Type: T-Slot,Item Model Number: 4040T-200-4-H,Quantity: 4 Pieces,Slot Compatibility: M8 T-Slot Nuts,Finish: Anodized,Main Material: 6063-T5 Aluminum Alloy,Profile Size: 4040,Center Hole Diameter: Ø 0.27 in / Ø 6.8 mm (Self-Tapping Screws Not Included)