PETOX 30 Set Black 2020 Series Aluminum Extrusion Profile Connector, Includes 1pc Wrench, 30pcs 2028 Corner Bracket, 60pcs T-Slot Sliding Nuts and Hex Screw Bolt for 20S Aluminum Rail Accessories

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.

Bought these to put together a desk I was making and it was just what I needed. I got 2 packs of these and used more than I thought I was going to but worked great!

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.

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.

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…..