🛠️ 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 |
T**S
Works as discribed
Arrive on time perfect for what I needed them for
J**W
Fast, Just as described.
Fast, Just as described.
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.
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.
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
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.
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.
F**S
Set-screws aren't long enough to hold.
These are poor quality. The set-screws in the package are not the same length so many of them do not reach the depth of the channel while still holding in the corner bracket. Therefore, the do not hold firmly. I Bought these, the inside L, and 2 types of mending plates; as well as a 10 pack of 2020. The other products worked fine, though of 4 different attachment components and 3 different allen key sizes...poorly controlled standards across products.
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