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Amazon.com: 8020, 1050, 10 Series 1 Inch x 0.5 Inch T-Slotted Aluminum Extrusion One Channel Linear Slot Bar Rail 80/20 (24" Long, Clear Anodize) : Industrial & Scientific
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8020, 1010, 10 Series 1 Inch x 1 Inch T-Slotted Aluminum Extrusion DIY Extruded Linear Slot Bar Rail 80/20 (60" Long, Smooth, Clear Anodize): Amazon.com: Industrial & Scientific
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