100x ZYLtech Spring Loaded T-Nuts for 2020 Aluminum Extrusion - M4 or M5

Like em. Easier than standard t-nuts. They stay put after you have them seated.

Excellent quality t-nuts for 2020.

Not all of the nuts fit tightly. They still work but slide around which defeats the purpose of the spring. I traced the issue back to the metal ball that is sping loaded. The ball sticks out of the nut further on the ones that work correctly. Slight inconsistency, but for the price I cant complain too much.