OUYZGIA 2040 Aluminum Extrusion 350mm 14 inch V Slot 2040 Extrusion for Building 3D Printers CNC Machine (V Slot 2040, 14 inch, 350mm, 2pcs)

Good quality, decent price, and accurate length. Also, all 6 side are anodized. I would (will?) buy them again.

The ends are anodized, seems to be good quality and a good value.

I have ben getting a lot of these extrusions that come shipped with aluminum bits all over them. These came wrapped well and clean. The finish is excellent and they are straight!

These are perfect! They are just what I expected. They came neatly wrapped and have a very clean finish. Even the ends have a matching finish. There are no shiny cut ends.⭐️⭐️⭐️⭐️⭐️

They work great, look great and both ends on each piece were either painted to match or anodized. Both pieces were flawless and I will purchase this brand again.

Its 2020 v-slot aluminum. The nuts I used with it fit fine, I didnt compare pricing with any other sources, but it worked perfectly for my needs.

The width lets me add stability to my vertical test bed, for motherboards.

For those not on the metric system, these are 23.5 inches long. They measure exactly 20mm in height and width. These have a smooth anodized finish over the entire surface, including the ends. They are straighter than I have the ability to measure. Should work for lot of purposes, including the CNC setup

I got these to build a new larger format 3d printer. Ive been using 2020 (vslot) rails for years to build printers. These ones in particular are very good looking because the ends are also anodized, so Im assuming they dont anodize these until after theyre cut, which Ive never seen and appreciate the effort. My only gripe is theres not internal threads in these. Not a big deal for my application, but it may be for somebody else. Otherwise, perfectly straight and nice and sturdy even at 600mm.

I got these to convert one of my older 3D printers into a printer with a larger build area. They are straight, and the measurements are dead on within an acceptable amount. I took my hotend off the cross rail from the printer I am modifying and it slid right onto the rails and back and forth motion was very smooth. All the sides and ends are finished. There are no burrs, scratches, or any imperfections that I could see. Another reviewer thought they were a bit pricey, but 4 packs go for about 30-36 dollars so while on the higher end of the spectrum still within the normal price range.