2020 Series Aluminum Extrusion Profile Connector with 2028 Corner Bracket, 62pcs T-Slot Sliding Nuts and Hex Screw Bolt Include a Wrench, for 6mm 20S Extruded AL Profile Rail Reinforcing 30 Set

These worked perfectly for all the inside corners on my 10-inch equipment rack using 2020 extrusion. Combined with an outside gusset, the joints are very strong and don't interfere with equipment mounting. There is enough slop in the oval holes to allow alignment, then they hold tight. Glad to have this in my 2020 inventory.

High quality, excellent finish, and plenty of extra parts for those that fall behind the workbench. Comes with real slide-in t nuts which are more secure than roll-in or twist-in nuts.

Not a bad set but useless if you don't have access to the end of the extrusion. Attempting to use those corner braces would prove interesting.

The item is fine, the locks are useless! They are to small, they are able to rotate as soon as you turn the screw in the slot and narrow enough where they can slip in or OUT! The manufacturer needs to replace the locks immediately. Anything you assemble with these - at your own risk! If you pay attention and like me spend a few extra hours on just aligning the locks one by one you can use them - unless you apply to much torque with the little hex key they send with it - strips those locks right out - so whatever you assemble, may or may not stay together…..

I got these or a project that I am working on designing, and these work great for corner to corner connections because there are build in grippers on the extrusion side but doesn't work for connection that are not corner to corner such as a horizontal to vertical transition because the grippers don't go into the channel and sits on top of the frame instead of the channel. Other than they have those bumps they work as intended but most people will need more than lined up corner to corner connections in a 3d world. Added a star, the company was willing to work with me on a solution where they didn't have to; that means a lot. Not that they are bad connector but didn't describe the bumps in them and didn't end up working in my situation for the project I bought them for (completely). I will be able to use them for other projects in the future.