I have ordered from TNUTZ for 4 years with zero issues. In my experience so far, all extrusions, brackets, and hardware are equivalent quality to any other well-known “name brand” extrusions at greatly reduced prices.
I recently constructed a 180-inch long by 96-inch high frame for a test fixture. A price comparison showed TNUTZ was half the cost of the next cheapest competitor on this project, saving me over $2000. All the parts arrived well packaged and accurately cut to length. The frame was used to align two parallel linear rails for a gantry, and it did so with no need for shimming or fine adjustment on my part. This is a great testament to the accuracy of the extrusion’s dimensions.
I highly recommend TNUTZ for aluminum extrusion needs.