8020, 1010, 10 Series 1 Inch x 1 Inch T-Slotted Aluminum Extrusion DIY Extruded Linear Slot Bar Rail 80/20 (12" Long, Black Anodize): Amazon.com: Industrial & Scientific
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TSLOTS TS10-10 GR 1" x 1" Grooved .26" Aluminum Extrusion
80/20 | 1.00 in x 1.00 in. T-Slotted Profile - Four Open T-Slots | 101 - TECO Technology
Amazon.com: 1010 1" x 1" Series Aluminum Profile Straight Line Connector, Extended Length Bracket Fastener with M5 Screw for Slot 6mm Aluminum Extrusion Profile Connect Parts : Industrial & Scientific
1010 4040 8020 Aluminium Extrusion Anodized L Shape Aluminum Extrusion Profile Al6061 6063 Extruded Aluminium Profiles - China L Shape Aluminum Profiles, Aluminium Extrusion Profiles | Made-in-China.com