KOOTANS 10pcs 2020 Series Black 5 Hole T Shape Joint Plates with 50pcs M5 T Nuts + 50pcs M5x8mm Hex Socket Cap Screws + 1pcs Wrench, for Standard 6mm Slot Aluminum Profile 3D Printer Frame

Used the hardware for a custom laser enclosure. Really awesome products.

Works great connecting 4040 aluminum extrusions

While some of the screws and T nuts are a little crunchy, the plates are well made. Working great for adding some Z axis support to my SV04.

I previously had bought a tall and super cheap bookshelf that has no backing on it. The thing was cute but came with no body support. This bookshelf would sway and lean over soo bad... that I thought it was literally gonna collapse in half one day. I couldn't even move it around.I eventually came to the conclusion that I was gonna have to trash it and buy something higher priced... but I wanted to try one last ditch effort to save it. I went online to find something to stop the swaying then I came across this item. I applied it to the middle backside of the shelf and at the bottom.And I tell you... these brackets are AMAZING!!! NOT ONLY HAVE THEY COMPLETELY STOPPED THE SWAYING.... but have added soo much body support and sturdiness... that I can push the bookshelf from one side of the room to the other and it will not even bend. LOVE IT!!! THEY HAVE ABSOLUTELY SAVED MY BOOKSHELF!!!

The brackets are sturdy and good for their purpose, but the included M5 screws are prone to having the hex head stripped, even when using the provided Allen key. With no spare screws, a kit of 10 quickly turned in to a kit of 9. I wouldn't recommend this product for over $10.

Slight roughness on one edge of the brackets but zero concern at this price, will buy again.

The media could not be loaded.  Things like desktop CNC 3d printing or even laser engraving uses aluminum extrusion so these helps out on modifications.

Received item as described. It should be nice if extra bolt and t-nut are included. Mine has one nut stripped.

Great price