Set of 2 Pcs T8 Anti Backlash Spring Loaded Nut Elimination Gap Nut for 3D Printer T8 Lead Screw Diameter 8mm Pitch 2mm Lead 8mm

I have a large CoreXY printer. When the stepper motors went off, the bed would immediately drop. Sometimes one side would drop lower than the other, throwing the bed level way off. Installed a pair of these, and it was like magic: the bed stays exactly where you leave it.Not every printer needs these, but if your Z Axis isn't staying where it's supposed to, give these a shot!

No finishing done on mine, two pieces were cut so far off that they wouldn't fit without a lot of grinding. Threads are horribly rough and triangular rather than trapezoidal. They do work after some finishing work though.

I can't fault the company for their design and nowhere in their description does it say that it works with the CR-10s, but just a word of warning, the holes are too close together to fit the slots of the CR-10s. see pic.

It is triple start screw! Not four start, like on product photo.If you are buyer - check how many screw starts your shaft has.So I need to return it. Know nothing about it's quality, looks good, but actual item does not match product photo.

Real pain to put on not as easy as shown but they do work

Great upgrade for my 3D printer

Had to thread each piece individually a few times to get the threads clean enough that it would thread smoothly and I could get the whole assembly onto my threaded rod.

T8 Anti Backlash Spring Loaded Nut Elimination Gap Nut for 3D Printer T8 Lead Screw,Works as intended!