A couple of them so far have been different in size inside the threads. Other than that, they are good quality, and sit in the rail perfectly.
April 11, 2017
Cautionary note. T-Nut is as described. Nice finish and good internal thread. Its a little loose in some older T-Slots and will spin freely, But worked very well in newer 6mm T-slots.
August 18, 2018
Quality very good. I use them for attaching 12mm linear rails to extrusions for my Corexy 3d printer build. Will be ordering more soon.
August 20, 2018
Works great! Easy to install
March 21, 2018
Works as promised. Came in a thick resealable ziplock bag. Used to replace two cracked nuts on my CR-10.
December 4, 2017
excellent.. they fit in without having to take apart my cnc..
May 14, 2018
These work well in a 2020 aluminum extrusion frame for a 3d printer. Occasionally, one would slip and rotate and not stay in place. These made a big difference to make the frame more rigid.
February 25, 2018
replaced all the cheaper T-nuts on 3d printer and greatly enhanced the rigidity of the unit
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