Rierdge 100 Pcs 2020 Series M5 Half Round Roll in Spring T Nuts, Roll in Spring Loaded T Nut for European Standard 20 Series 6mm T-Slot Aluminum Extrusion Profile

Needed these for a 3d printer build and the price was right. When they are functioning, they work and fit great just be prepared to account for about 5-10% less than ordered due to the ball bearings and springs falling out of them. I had more than enough for my project but had to throw away a handful of them because they were broken on arrival. Not sure if it was the shipping or just what you get for the cost, but if you need 50, buy 75.

They don’t roll into LDO 2020 extrusion for Voron printer. Too tall