2040 Aluminum Extrusion Profile Length 50mm European Standard 2040v-slot Silver Black Workbench - Linear Guides - AliExpress
Amazon.com: Coavoo 2040 Aluminum Extrusion 5.91 inch / 150mm Length T Slot Black 2 Pack, Extruded Aluminum 20mm x 40mm 20 Series T Type Profiles Anodized European Standard Linear Rail Frame 2Pcs : Industrial & Scientific
4pcs 1000mm 2040 Aluminum Extrusion for Openbuilds-VHB-AC-64