BLCCLOY 20Pcs 2020 Aluminum Extrusion Black Corner Bracket T Slot Inside L Sh...

This corner bracket set is excellent quality. The aluminum extrusion brackets are sturdy and well‑machined, with clean edges and consistent sizing that make assembly smooth. The included T slot nuts and bolts fit perfectly, saving me the hassle of sourcing hardware separately. I used these for a DIY frame project, and the joints came out solid and square with no wobble. The finish looks professional, and the hardware tightened down securely without stripping. It’s clear these are designed with precision and durability in mind. For anyone working with 2020 series aluminum extrusion, this set is a reliable choice that delivers both strength and convenience. Highly recommend!

CHECK YOUR SLOT SIZE! This is perfect for 6mm slots (which seem like it’s the more common size). Unfortunately my application was an 8mm slot. Still giving this 5 stars as it seems well made and it fits well into some other rail I have with a 6mm gap. My fault for not realizing there were different extrusion gap widths.

Good quality connectors for aluminum profile. Work as intended.

These work well and are sturdy for interior joints. But they fit quite tightly. I was mounting a cross bar between two pieces of extrusion and trying to slide it to align it properly, but even when fully unscrewed, these brackets are very hard to move.

I bought these for the Ender 5 I own. It's still in pieces at the moment but these corner brackets work exactly as specified. They helped me make the entire printer more square than before my tinkering. The Y axis motion is smoother due to being more square. Absolutely a breeze to use. They sit inside the frame, so they are not unsightly like the original corner brackets. Remember to use thread lock on the grub screws.

Nice finish and rigid. Hardware that comes with it was good too.

Well made no burrs. Fit perfectly and made a solid connection between two bars.

2nd time buying this product, both times have been great, no complaints! Cheap price, great quality, fast shipping. Just as described.

Great product worked as described

Four inches long should make a good strong joint

Perfect at 20mm x 20mm, not like similar ones that stick out a few mm. That means the hole at the end of a 2020 extrusion lines up. I bought twice now.

J aimerais savoir si il y a des équerres plus grandes mais qui a 6 mm la même mesure mais plus long de chaque cote

Yet to use look convenient for light diy projects