🛠️ Build like a pro, connect with confidence!
This 20-piece aluminum extrusion connector set features black oxide corner brackets, galvanized T-slot nuts, and stainless steel M5 bolts, engineered for precise 90° connections in 20mm series aluminum frames. Perfect for industrial builds, 3D printers, CNC machines, and robotics projects, it offers durable, rust-resistant hardware with all components included for fast, reliable assembly.
| Finish Type | Black Oxide |
| Unit Count | 20 Count |
| Item Depth | 20.0 millimeters |
| Mounting Type | Protruding |
| Manufacturer | Tongling Hardware |
| UPC | 796862232429 796862233136 |
| Part Number | TL-2028-20B |
| Item Weight | 14.8 ounces |
| Country of Origin | China |
| Item model number | 2020 series extrusion |
| Size | 20Set black with M5 screw nut |
| Style | 20Pcs 20x28 Bracket with M5 Bolt Nut |
| Finish | Black Oxide |
| Shape | Square |
| Item Package Quantity | 1 |
| Number Of Pieces | 20 |
| Head Style | Hex |
| Cutting Diameter | 20 Millimeters |
| Measurement System | Metric |
| Included Components | Case |
| Batteries Included? | No |
| Batteries Required? | No |
| Assembled Diameter | 20 Millimeters |
K**.
Great Product
I love how easy and stable it was. I used it to add a seat to the rear of my golf cart. Worked great.
J**W
Fast, Just as described.
Fast, Just as described.
M**G
These are the good ones!
Super strong, nice 6mm bolts, easy to thread every time. These are the best 90 deg fitting that I have found. I'll use these and only these. These are the good ones for any 2020 project.
W**O
Wish it wasn’t made of cast aluminum
The corner idea is good but prongs would break off if there was any shifting while fitting or moving due to shearing. Luckily I was able to reuse the broken corner brackets for the door, with a bit of sanding smooth and painting. It would be great if they were made of something stronger. Fit very well w the tbar 2020s, however. The parts (set screws, hex wrench) were complete and very handy.Not recommended for anything that might need to be moved regularly.
A**T
Excellent corner pieces for a frame
While converting one of my old 3D printers into an enclosure, I decided to replace all of the plastic printed parts. I swapped out the corner triangles for these metal ones and it's far more solid now, no flex whatsoever. As an added benefit, they provide a small "shelf" at each corner to sit a platform on.
N**I
Perfect Fit and Strong Hold
Used these to elongate my laser bed. Perfect fit and strong hold. No jumping or skipping when crossing the joint.
C**
Good value loved the fasteners
The twist lock fasteners were great and I could pop them in anywhere and not just from the end
D**E
Awesome!!
From appearance these are very Heavy duty and perfect for multiple applications. Will buy more in future .
Trustpilot
2 days ago
5 days ago
