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

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.

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 grab these extrusions whenever I see a good deal. I use them for projects, repairs, anywhere I need infinite adjustability and versatility. The black anodizing is attractive and tough. Love these.

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.

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.

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

I picked these up so I could add some parts to reinforce my 3d printer, and this is exactly what I needed. The sizes are easy to select, and theyre exactly the same type of extrusions (2020 aluminum) that are used to build the frame of my 3d printer. The edges are chamfered and not sharp, and the channels (v-slots) fit the typical extrusion assembly nuts without any issue. These are a good value for the price, definitely recommend if youre looking for 2020 extrusions

These aluminum extrusion pieces are accurately cut and beautifully finished. They work very well for custom 3D printers, CNC machines, laser engravers, etc. I highly recommend them!

Ive ordered so many rails and I think these are the best looking ones Ive received. They are just so well made with such an outstanding finish. As I said, just beautiful. Cant find any flaws. Come packed every well also. Fantastic rails, fair price, would gladly recommend.

I got these as part of the modifications to my tronxy x5sa-400, slowly transitioning toward a VZ-bot 3d printer. The extrusions are cut precisely to 600mm and matched up to the tronxy factory frame exactly. These would be great replacement for damaged rails, or if you are building your own 3d printer frame from scratch.