●【Total 10pcs/packs】Packaged with 10pcs 2020 aluminum extrusion,Size 39’’(1000mm) * 20mm * 20mm. ●【European standard】European standard 20x20 aluminum extrusion, made of 6063-T5 high-strength aluminum alloy material with great anodized finish treatment. Smooth surface without burrs on the edges ●【Sturdy and Well Packaged】Sturdy and strong extruded aluminum,packaged with great film for each aluminum profile so there were no scratches or any other flaw on surface when you received. ●【Better Performance】Make good performance for building 3d printer frame,DIY 3D printer,automation equipment,or other frame supports. ●【Customer Services】If you have any questions about the aluminum profile, please send messages to us through click “Bayka” store. We are always here.