400mm 2020 V Slot Aluminum Extrusion Profile, 2020 Series Extruded Aluminum Rail 400mm, 20x20 Aluminum Extrusion, 20/20 Al Extrusion 400mm Black 4 Pcs for 2020 Corner Bracket Hardware

Like, well packaged, clean edges with no burrs, dislike, all the small pieces of metal shavings

These things should come with a warning on the pack, “DO NOT OPEN INSIDE of HOUSE”. The 4 pack of aluminum extrusion rails came nicely packed to prevent damage in transit, but they also packed them up with all the metal shavings from the saw used to chop them to length. Pulling them out of the wrapping left slivers and spurs of aluminum confetti everywhere. Vacuuming it up would have been simple had it not been for the cutting oil practically gluing it to whatever surface it contacted. So I’m dropping 2 stars just for the annoyance caused by inconsiderate personnel handling processing and packing.Other than that, the material appear s to be cut to size and is otherwise as expected.

I am working on a custom 3D Printer build and I wanted some 2020 rails. I got this 4-pack of 400-mm long V-slot 2020 aluminum from SeekLiny.They are what I expected. They did come, however, with a whole bunch of shavings all over them. It would have been nice for them to be cleaned off before packaging.

These V Slot extrusion profiles are directionally accurate, great overall quality and perfect for creating 3d printers. These are a good value at their current price point and will certainly order from them again when I need more for my projects.

These aluminum extrusions are well made and do exactly what they're supposed to. There’s not much else to say—they're solid, reliable, and will get the job done. I recommend them.

I absolutely love extruded aluminum. It’s so easy to build easels, shelving units, work benches, and almost anything else I need in my art studio. I even bought a chop saw to quickly cut the pieces when necessary. I can build almost anything I need quickly and easily, but the best part is that if I don’t love it after I’ve finished I can take it apart, redesign it, and build it again. The best stuff ever!